Arrow kinetic energy for big game FOC The more weight that is located in the front half of the arrow, the more forward is the arrow's center-of-balance. Oct 22, 2006 · Some say this "tuning" of the arrow decreases friction w/in the flight path (trims the profile of the arrow) thus flattening the trajectory, decreasing wind deflection, & improving accuracy. 5075 ft/sec @ 204. I shoot a chill x @73lbs drawn to 31" with a 530 grain arrow fully dressed. It demands precision, skill, and a deep understanding of the equipment used, particularly the arrows. Chronograph Arrow Speed Shoot three arrows and use the average of the three shots. Maintain accuracy in any element. Oct 27, 2012 · Accuracy trumps kinetic energy and momentum of the arrow. Though I have never hunted elephant with a bow, if I did I would likely use an even heavier arrow. Aug 29, 2024 · Kinetic Energy Required for Hunting. Tune for perfect arrow flight, and then select a streamlined and low-friction broadhead. This knowledge helps you optimize your bow and arrow for your needs in archery or hunting. Also in the past many charts just look at numbers and the bows don't work like that in reality. You can vastly increase kinetic energy by increasing arrow speed. rabbits. But is it the right one? More to come, but for now, I’ll stay on the rails with Kinetic Energy so the speed bow guys can relate with ‘hitting the target’. An arrow weighing 370 grains was chronographed at 430 fps, generating kinetic energy of 205 Joules. is scalar, or nondirectional, in nature. So doubling the arrow mass Sep 6, 2023 · Your total arrow weight won’t matter as much (although the heavier the arrow, the quieter your bow will be) and you will have plenty of kinetic energy (KE) no matter what to take down a deer or elk. The term kinetic energy is derived from the Greek word for motion, kinesis, and the Greek word for active work, energeia. When you shoot a light arrow you hear more noise and feel more vibration. 16 ft-lbs. Jan 22, 2018 · I like an arrow over 400 grains personally. As applied to an arrow in motion, K. 4 grains to 1163. Back in the days of the long bow, calculating kinetic energy was pretty important. That doesn’t mean it’s not valuable information. (To determine how much initial kinetic energy your own bow-and-arrow set-up has at the shot, the formula is which is arrow weight (mass) x velocity squared, divided by 450,240. In our example, the computed kinetic energy of the (5 gr/lb) 300 grain arrow was 49. Momentum is a measurement of the force of an object's forward movement. The traditional “24-caliber or larger centerfire” regulation permits use of such anemic cartridges as the . Martin's "A Song of Ice and Fire" novels, his Westeros-based short stories, "Game of Thrones" and "House of the Dragon" TV series, and all things ASOIAF - but with particular emphasis on the written series. This value will then be used, along with your arrow's weight to determine your Kinetic Measure the Arrow Length (in inches): Starting from the nock’s throat, measure to the end of the arrow shaft. The initial K. If you only puncture one lung on an elk, the odds of recovery are close to zero. Material . Momentum is the amount of energy required to stop the arrow. Naturally the faster you can push a heavier arrow the more Kinetic Energy you will generate and thus the deeper your arrow will penetrate. Jun 28, 2023 · It is the TOTAL ENERGY of a body in motion. Apr 7, 2023 · In general, a good arrow speed for deer hunting is between 250 and 300 feet per second pending your TAW. In general, a minimum of 40 FT-LBS of kinetic energy is recommended for whitetail deer hunting. Similarly, arrow momentum determines arrow penetration. 450240 is a constant, you will need to know how fast your bow is, and how much your arrow weighs. 5 grains/per pound of draw weight). Optimal Bow Hunting Kinetic Energy Range: Small Game: 25 ft/lbs; Medium Game (Deer, Antelope): 25-41 ft/lbs; Large Game (Elk, Black Bear, Boar): 42-65 ft/lbs; Big Game (Cape Buffalo, Grizzly Bear): 65+ ft/lbs Mar 15, 2021 · KE is the ‘energy’ in the arrow as a result of its velocity and overall weight. This added weight costs me a bit in raw speed downrange, but the advantage is increased kinetic energy and momentum. R. 8 foot lbs. When discussing the penetrating ability of a hunting arrow, the two most commonly referred to factors are kinetic energy and momentum. Go a bit heavier - within reason. But when a 600 grain arrow was fired from the same bow, its computed kinetic energy was 54. a. Enter the weight of your arrow and the speed at which it will be shot to quickly determine the kinetic energy it will output upon impact. Kinetic energy is impacted not just by arrow speed, but by arrow Nov 23, 2023 · , arrow kinetic energy (KE) measures the energy an arrow has due to motion. 5” NAP original Spitfire. This isn’t foolproof, but an improvement over caliber bias. How to Calculate Arrow Kinetic Energy To calculate arrow kinetic energy, you need to have accurate measurements of the speed of your bow with the arrow it is paired with, and the weight of the arrow in grains. Feb 10, 2012 · Arrow weight is one of the most underrated and overlooked aspects in western big game hunting. You simply need to enter the information in the form below, and your speed will be estimated to within a few FPS. K. Even several major arrow manufacturers have KE calculators and recommendations for big game hunting. lbs of kinetic energy. Aug 25, 2016 · Gold Tip, an arrow company, recommends a minimum of 25 ft-lbs of kinetic energy to ethically bowhunt deer. Kinetic energy is expressed in the formula K. An arrow with a mass of 370 grains was chronographed with a velocity of 430 feet per second, generating kinetic energy of 205 Joules. Oct 4, 2013 · Photo by: Bill Kinney I recently got this question from an OutdoorLife. and How Much Kinetic Energy Do You Need To Hunt Specific Game? that an arrow’s kinetic energy is reduced by around 3-4% for every 10 yards it travels. Does the kinetic energy change at different yardages? If so, what […] Why Kinetic Energy Matters. The goal is to have the most kinetic energy possible. This form will calculate the kinetic energy of your arrow, even if you don't know your arrow's speed. With the right weight, you can make this happen. " Personally I feel that placement is paramount. Mar 15, 2021 · The kinetic energy of this setup would be calculated by taking the arrow weight of 400, multiplying that by the speed of 297-squared, and dividing the result of that multiplication by 450,800 – which tells us that this bow and arrow setup produces 78 ft. That said, speed does factor into the kinetic energy and momentum equation quite a bit and, in general, a bow that delivers a faster arrow is going to deliver more downrange energy than a slower bow. /lbs. KE is derived from Dec 9, 2024 · In simpler terms, kinetic energy is the punch an arrow packs when it hits its target. and momentum when shot Oct 8, 2016 · When each vehicle hits a barrier, which is going to take longer to stop? High kinetic energy is a good thing because it means your arrow has plenty of energy. That amount of energy (less losses due to inefficiencies) is transferred to the arrow/bolt as kinetic energy. They also state 55 ft-lbs of kinetic energy would is sufficient for most popular North American game species. Modern compounds and arrows have virtually eliminated the worries about having enough kinetic energy to ethically hunt big game. Notice that as the arrow gets heavier, the amount of kinetic energy increases. or more is good for big game such as whitetail deer. Apr 20, 2021 · Kinetic Energy And Arrow Flight. Kinetic energy is impacted not just by arrow speed, but by arrow Calculate Kinetic Energy for a Given Arrow Weight and Speed. 66 ft-lbs. Nov 24, 2024 · Calculate the kinetic energy of your arrows with our Arrow Kinetic Energy Calculator. Apr 25, 2018 · The heavier arrow reduces noise and provides enough kinetic energy for deep penetration. The four major factors that influence penetration are Kinetic Energy, Broadhead Type, Friction, and Arrow Construction/Flight. The bow imparts a certain amount of energy to the arrow when fired. Shot him with a 3-blade 1. I used to rack my brain with weight, speed, kinetic energy, momentum, FOC etc etc. It’s known that for big game bowhunting targets 65 [ft lbs] kinetic is required, for medium game 42 [ft lbs] is required, and for small game 25 [ft lbs] is required. The Big Nasty is an all-steel, three-blade, cut-on-contact design with a 1€‰1 „8-inch cutting diameter. 79 foot pounds on impact. <25ft-lbs not suited for hunting. Know with confidence that you’re ready for the shot. Sep 28, 2020 · Super-fast bows (and arrow setups) have also proven to be squirrely in tuning, particularly with broadheads. My bow is set at the maximum draw weight, can I increase kinetic energy in any other way besides increasing draw weight. There's plenty of misinformation regarding this arrow energy, but the real dilemma is posed by determining how much arrow energy is enough to cleanly dispatch the trophy whitetail bucks about which we all dream -- using the specific outfit with which you bowhunt under "normal Mar 3, 2019 · Agree with the above posts. As arrow weight goes up, you will quickly find that keeping decent FOC requires upsizing the head or adding weight, which is a tell-tale sign that the move towards overly light heads was not necessarily in the interest of big game pass-throughs, although it does look good on the chrono. KE in foot pounds — of an object in motion. A properly balanced arrow measurements of 7 to 10%. -lbs. Here is the industry-recognized minimum kinetic energy required to harvest the most common game animals with a bow. Mar 14, 2023 - Back in the days of the long bow, calculating kinetic energy was pretty important. com reader Kyle Turner: "What is thought to be the minimum foot-pounds of energy required to dispatch anything from whitetail deer to moose humanely and ethically?" The most common figure thrown around when hunters discuss the energy required to ethically kill a whitetail is 1,000 ft. I shoot 5575 Gold Tip Pro Hunter arrows tipped with 100 grain heads The OverKill Plan B Big Game Arrow & Broadhead Package Chancy Walters of Whitetail Adrenaline - Plan B Arrow & Broadhead System Make this your most successful deer season ever with Banshee Arrows. Rheingans . GREED Apr 8, 2016 · Among archers, I see and hear a lot of discussions about the kinetic energy (KE) of arrows. Do not measure the tip due to differing sizes depending on the type of tip used such as broadheads. In my opinion, this arrow would be fine for hunting Western sub-species of White-tailed deer, like the Coues deer and similar-sized big game, but News and discussions relating to George R. Jan 29, 2011 · Get an arrow that will weigh out at least 400 grains, put a good COC type head on it and shoot something between 220 and 250 fps and you can kill elk at any practical distance or angle Save Share Apr 20, 2016 · My total arrow weight including broadhead (125 grain), insert, arrow, fletching, and nock is 372 grains. Were you to measure the speed and do the calculations, the lighter arrow actually has less kinetic energy when fired from the same bow. With a bow’s stored energy essentially fixed, we must look to the arrow for the optimal balance of speed and mass to produce the downrange energy needed for maximum penetration. Apr 18, 2023 · If you're shooting arrow at 280 fps and your mass arrow weight is 400 grains, then the KE = 400*280*280 /450800 = 69. Last year I hit a bull elk quatering away at 35 yards, got very little penetration and no blood (we looked all day). ” Jul 11, 2015 · So I came across this chart while researching kinetic energy. 53ft-lbs. But, we’ll play along, since it is the most common measurement of bow efficiency. 32 ft-lbs of energy which is plenty for any western big game. =1/2mv 2, where m is the mass of the object (the arrow in this case) and v is the velocity (speed) of the arrow. Related to that, the kinetic energy continually decreases in flight. Archery is an ancient and fascinating sport that has evolved over centuries. Your May 12, 2021 · Kinetic Energy vs. I fall into the group of bowhunters that believe in arrow weight and momentum over speed and kinetic energy. Enter Data Below for Results Enter speed and arrow weight data into the calculator. And it stores the same amount of energy each time it is drawn/cocked. For deer hunting, you want an arrow with sufficient kinetic energy to ensure a quick and humane kill. As a hunter, you want to invest in some that is durable and will not break when it makes contact with an animal or other objects whether bale of hay or water jug. I recommend a minimum of 415-grain total arrow weight under these specs. More on that later. Apr 2, 2012 · Total arrow weight is 407. According to Easton, a 400-grain arrow traveling at dinosaur speed of 170 feet-per-second has sufficient energy to harvest The trick is to balance speed (and range finding forgiveness) with arrow mass and penetration potential. Using a 378gr arrow traveling 303 fps velocity we get the following numbers: Kinetic Energy (ft-lbs) "Using an archery example-a 350-grain arrow will be faster out of the bow than a 450-grain arrow, but the 350-grain arrow will lose about 12% of its kinetic energy at 40 yards, were the 450-grain arrow will only lose about 4% to 6% of it energy at the same distance. 1. How to Use the Arrow Kinetic Energy Calculator. Jun 5, 2013 · The data given spans arrow masses from 379. Use the following formula to calculate your arrow’s kinetic energy: KE = (Arrow Weight x Speed^2) / 450,240. When an arrow is shot with high speed, it transfers more kinetic energy to the target upon impact, causing greater damage and higher chances of a clean kill. -lb. Kinetic Energy and Momentum Calculations. Nov 21, 2022 · Tags: momentum, kinetic energy, high foc, dr ed ashby big game system, broadheads, bowhunting, arrows Incorrectly benchmarked in bowhunting, KE has absolutely no indication of penetration or for measuring the tissue destruction protentional of projectiles traveling less than 2500 fps. Why do we measure The Power of Momentum and not Kinetic Energy? Can speed reduce arrow penetration? Tissue resistance to arrow penetration. You could kill any whitetail deer with a 45 lb bow shooting a 300 grain arrow with a field point. 5″. The basic formula for calculating KE is 1/2 the mass of the moving object multiplied by the square of its velocity [KE = 1/2 (mass) x (velocity x velocity)]. To use the calculator: Enter the mass of the arrow in grams into the “Arrow Mass” field. Arrow momentum measures the force required to stop an arrow when it reaches its target. lbs). It rests securely on two ball-bearings and sits securely via a top-mounted retention brush. Penetration is a major factor in how lethal the arrow is. What is good kinetic energy for an arrow? Check out kinetic energy recommendation for hunting game : Back in the days of the long bow, calculating kinetic energy was pretty important. Max Efficiency: arrow ~10-15% over IBO (5. e. Calculate the arrow’s speed in feet per second (FPS) using your bow’s specifications or a chronograph 4. Therefore, the term kinetic energy means “through motion, do active work. Arrow Kinetic Energy and Momentum for Bears A bow and arrow setup should be able to put out 42-65 ft-lbs of kinetic energy (KE) for black bears. For big game, you want to be 65+ foot pounds, so this set up is more than sufficient. Nov 8, 2021 · A bow is a spring that stores a measurable amount of energy. lbs. ” Umarex® Arrows accept screw-in field tips and broadheads for ultimate adaptability when target practicing, 3D shooting, big game hunting, or small game hunting. Why? Most bow shots are 20 yards. This results in a higher incidence of exit wounds on large-sized big game, which allows more blood loss for a quicker death as well as a better blood trail. In most cases a well-placed arrow of any weight will get the job done, but when things go wrong and your arrow misses it’s mark by a few Sep 22, 2011 · Mention arrow energy minimums pertaining to big game hunting. Kinetic energy equals velocity squared, multiplied by mass, divided by 450,240. Click the “Calculate Nov 17, 2023 · Kinetic energy is the energy an object has owing to its motion. 50 – 65ft-lbs: Large game animals i. If you use the calculation for kinetic energy (Arrow weight x Velocity squared, divided by 450240), this combination gives me 89 foot-pounds of kinetic energy, a lethal combination for any North American animal. Kinetic energy (KE) equals half of an object’s mass multiplied by the velocity squared. This calculation is the best measure of your arrow’s energy retention Oct 15, 2020 · I arrowed a big bodied 39-5/8” bull moose in far NW Alberta this fall. e Sambar, Red deer. 40 – 50ft-lbs medium sized game: Chital deer, hog deer, etc. Find out the kinetic energy of your arrow or bolt using the following simple calculator. of energy at the muzzle); the . 2 ft-lbs (I've read 40 ft-lb for deer, and 65 for elk/bear. Sep 20, 2023 · Understanding Arrow Kinetic Energy: A Key Factor in Archery. Apr 17, 2011 · Kinetic energy of an arrow can be found by using the formula KE=(mv²)/450,240 where m is the mass of the arrow in grains and v is the velocity of the arrow in fps. With these three factors, you might be pulling your arrow out of a tree after it blows through an elk! Welcome to the Kinetic Energy Calculator. , a mere 6% increase. Kinetic energy is a function of the speed and mass of a moving object. 9 mph Arrow Kinetic Energy = 83. 2 and 444. Those elements are what is needed to calculate kinetic energy. Measure speed and mass for optimal archery performance! Exactly. Centered a rib (broadhead cut it in two) on the way in, penetrated to the far side on a broadside shot. Balance the Arrow: Using a sharp item as the balance point (can also use a pencil, your finger, etc) and find the balance point. There are many factors to consider: draw weight/length, arrow speed/weight (both kinetic energy and momentum), and broadhead I know that sounds heavy, but there are kinetic energy calculators out there that will figure this out for you in a second. For the 300 grain arrow to equal the 500 grain arrow, you would need to shoot it at about 423 fps, given that the 500 grain arrow Oct 19, 2022 · Deep arrow penetration in really big game is a must. What’s a good kinetic energy for hunting? For small game (rabbits, squirrels), 25-30 ft-lbs is usually sufficient. One, for example, states that 55 foot pounds (ft x lbs) is generally sufficient for big game in North America. These days some game departments rank cartridges by energy levels rather than just caliber. Jan 15, 2015 · If both a 300 grain and 500 grain arrow are shot out of a bow at approximately 300 fps, the 500 grain arrow will have 162 Joules of kinetic energy, while the 300 grain arrow will have 97. Oct 1, 2016 · Why Kinetic Energy Matters. Note the high-speed setup generates nearly equal kinetic energy to the compound with the heavier arrow, but the momentum is significantly higher with the heavier, slower setup. Building Your High FOC Arrow Setup: Feb 4, 2017 · This is a better fit for traditional bows and recurves, but with compounds there is a definite optimum arrow weight, beyond which its kinetic energy decreases as arrow weight increases. Jan 6, 2025 · Snap-In Arrow Lock: Using an Alpha-Nock HPX, hear and feel the arrow nock in place. Arrow performance depends on kinetic energy and momentum. The 450,240 just sorts out all the units and converts things from fps & grains to ft-lbs. Big Game– Most of today’s compound bows are more than adequate THE NERDY PHYSICS STUFF HOW IS KINETIC ENERGY COMPUTED? Kinetic energy of an arrow can be found by using the formula KE = (mv ²)/450,240 where m is the mass of the arrow in grains and v is the velocity of the arrow in fps. But without sufficient momentum, that energy quickly erodes upon meeting resistance—the rib cage of a deer, for example. 2 Joules of kinetic energy. My 28½-inch Easton 4mm FMJ shaft tipped with a 100-grain broadhead weighs in at 380 grains – a medium-weight shaft that will produce enough K. Simply stated, kinetic energy is the result of an arrow’s weight and speed. 6, I plugged my numbers into Easton's kinetic energy calculator at 271 fps with 445 grains I'm getting 72. Understanding this energy is crucial for ensuring effective hunting or target shooting. More force equals deeper penetration. I have considered getting Easton Full Metal Jacket arrows to gain some weight and kinetic energy for hunting elk. Oftentimes proponents of lighter, faster arrows point to the arrow’s kinetic energy as support for their preferences. You can figure the KE of your arrow using a formula. A better energy model for compound bows looks like this: Draw energy = (arrow weight + virtual mass + K (arrow weight)3 ) x arrow speed2 / 450240. An example with a 400gr arrow at 250FPS would be KE=[(400)(250²)]/450240 which totals to 55. This range of velocity with the correct arrow provides more than enough kinetic energy and momentum to effectively take down a deer while also maintaining accuracy at typical hunting distances. The broadhead is the only arrowhead that can generate enough kinetic energy to penetrate the animal's hide and create enough friction to slow down the arrow, ensuring an ethical and successful hunt. Mar 9, 2008 · They, and some very well-know bow hunters, point with pride to the "kinetic energy" generated by a fast arrow. SPEED VS. 9 ft·lb. assuming it's being shot out of something that transfers a payload of kinetic energy. Apr 9, 2023 · We are going to cover the most important aspects of arrow builds for bear hunting, namely: arrow kinetic energy and momentum for bears, arrow weight, insert selection, and broadhead selection. For more information on finding the kinetic energy of an arrow, watch this video. Max Energy: arrow ~20% over IBO (6 grains/per pound of draw weight). 5 lbs of kinetic energy (Gold Tip Carbon arrows with a 100 gr Muzzy MX4 -total of 386 grains at 253 fps). of kinetic energy. Jan 8, 2025 · + 6 grain BlackOvis arrow wrap; Total 414. The Package Includes: 6 - Banshee Carbon Hunting Arrows 6 - OverKill 200-grain Premium Fixed Blade Single/Double Bevel Broadheads 6 - 200-grain Field Points If you take your whitetail hunting Sep 5, 2024 · While I don’t get into the ultra-heavy arrow game, I use a moderately heavy hunting arrow with a broadhead weighing 125 grains and an additional 25-grain collar behind it. Jan 4, 2017 · One of the most confusing concepts for bowhunters today is the application of kinetic energy to their hunting rig. Sep 22, 2023 · A 550-grain arrow may be considered heavy for some purposes, but it can be suitable for certain types of big game hunting, where deeper penetration and higher kinetic energy are desired. includes such things as; radial energy due to arrow flexion; rotational energy due to arrow spin; sonic energy due to vibration; heat energy due to friction; and potential energy (all other remaining energy). In this formula, arrow speed is more Oct 25, 2023 · In conclusion, when selecting an arrowhead for big game hunting, hunters must consider the importance of kinetic energy and friction. 25-20 Winchester (86-grain bullet at 1,460 fps generating a puny 406 ft. The drag coefficient is calculated using the formulas from Exterior Ballistics of Bows and Arrows by J. By this logic, at 1,000 ft. Explanation KE is a measurement of the energy of a moving object, regardless of direction. 25 – 40ft-lbs small game animals i. Arrow Momentum. The equations of motion are solved with a fourth order Runge–Kutta method. Mar 14, 2023 · After a shot, arrow velocity continually decreases. The heavyweight arrow at 682 grains that I made shot 50 fps slower With my current bow and arrow set up, I am able to produce of speed of 286 FPS with an arrow weight of 488 grains. 59-foot lbs. Don't care for math? Kinetic energy is simply the energy of an object expended due to its speed and mass. So, if you’re shooting a 450 grain arrow at 279 fps, your kinetic energy would be 77. That makes maximum, and hopefully two-hole, penetration more important than on just about any other North American big game animal. May 1, 2015 · a heavy arrow and a cut on contact fixed blade should kill pretty much anything short of a rhino. 5 grains. A heavy arrow and light arrow will leave the bow with generally the same amount of kinetic energy. of pointblank arrow energy. So if we have Feb 19, 2021 · A 450-grain arrow traveling 280 FPS will generate 78. . You will need to provide total arrow weight and initial speed for the calculation to be effective, as well as some other optional info (see below). Think of it as the force behind the arrow that drives it. Sep 2, 2019 · Kinetic energy is expressed in the formula M x V squared ÷ 450240 = E in pound feet. 38. The sum equals the kinetic energy — a. ki·net·ic en Nov 6, 2023 · Kinetic energy is the oomph or energy an object, like an arrow, has owing to its motion. 53 ft. Let’s start with a basic review of kinetic energy and momentum as they relate to archery equipment. So how do you know how much kinetic energy you have? Here is the formula: (velocity x velocity) X arrow weight in grains / 450,250= ft-lbs. 65 (ft. I figure my total arrow weight using the FMJ's would be 477 grains. View Results* May 1, 2021 · Understanding how kinetic energy and momentum affect downrange performance will help to make your bow and the arrows it launches more deadly on the game that you hunt. You can calculate kinetic energy in an arrow by taking the weight in grains, multiplying it by the speed in feet per second squared and then dividing by the constant 450800. Jun 2, 2010 · The arrow actually entered behind the last rib and sliced through the paunch and then the heart before sticking into the bones of his brisket. The more durable an arrow is, the longer it will last. How fast is a 500-grain arrow? May 5, 2015 · So if you are shooting a 370gr arrow with a big ole mech head with 3-2" blades that have to scissor open [expending arrow energy]you won't get the penetration of a fixed head with good taper that cuts on contact- its got whats called 'mechanical advantage' in physics terms but all we need to know is it slides in with less effort. During my hunt, I shot Easton A/C Injexion 330 shafts and NAP's 100-grain, Big Nasty broadheads. Adjust Arrow Weight to Achieve Desired Kinetic Energy Oct 28, 2024 · The ideal kinetic energy depends on your specific archery goals, such as target practice, small game hunting, or big game hunting. Momentum and kinetic energy is not the same thing. While most bowhunters pay an awful lot of attention to arrow speed, it’s only one part of the KE equation. E. To calculate your arrow’s kinetic energy you need to know two variables: 1) your total finished arrow weight in grains, and 2) the velocity of your arrow. Kinetic energy is (arrow weight × velocity²) / 2. Apr 13, 2022 · Slowly buying tools to do my own work at home and I got my grain scale in, measured all my arrows all between 446. ) This lighter arrow could have had more KE than the heavier one, but the penetration was poor. I use the heaviest arrow and could care less how fast or slow the arrow is moving. You can calulate it with this formula: KE=(mv²)/450240. With my current bow and arrow set up, I am able to produce of speed of 286 FPS with an arrow weight of 488 grains. 975 grain arrow; According to the Backcountry Bowhunting calculator, it's giving me this: Arrow Speed = 300. Enter the velocity of the arrow in meters per second (m/s) into the “Velocity” field. If this is the case, then a 300 grain arrow, at 200 fps, would technically be sufficient for deer, and a 350 grain arrow, at 230 fps, would be sufficient for elk, boar, and black bear, and a 475 grain arrow, at 250 fps, would be sufficient for any other large game (moose, grizzly, etc. To determine the kinetic energy, you need to know the mass of the arrow and its velocity. Think of kinetic energy (KE) as the hammer and your arrow as the nail. M is Mass (weight in grains), V is Velocity in feet per second, and E is kinetic energy in foot pounds. Ive had very good luck with recoceries. This allows the energy to drive the arrow straight without bending, holding true to the statement “straight as an arrow. Medium-sized game like deer, pronghorn, and sheep require an arrow with a kinetic energy range of 25-41 ft. 3-77. The amount of kinetic energy your bow produces is key in every situation you’re faced with in the mountains. For example, my bow fires a 400 grain arrow (broadhead included) at 305 feet per second. Kinetic energy determines the amount of force applied at impact and influences how deep and effective the penetration of your arrow will be. 5 * Mass * Velocity^2. If you're looking for an arrow shaft that delivers maximum penetration while hunting big game or striving to increase your accuracy in the wind and inclement weather, the Kinetic shafts are constructed with Gold Tip's Smart Carbon® Technology and engineered to deliver maximum kinetic energy. ) How much kinetic energy are you guys using with mechanical broadheads for whitetail? . As the grain increases by 25 grain, you can expect about 2 percentage points in loss of speed. I'm not sure I buy into this because all my arrows have the blades offset from the vanes & I'm shooting 2" 3 arrow groups @ 20yds. Arrow Velocity Feet-per-second. into Kinetic Energy in the table below. Using a kinetic energy calculator, the KE is 84. Aug 7, 2022 · The following formula can be used to figure the kinetic energy of an arrow fired from an individual’s specific bow/arrow combination: Fps² x Weight of Arrow/450,240 =Arrow’s Kinetic Energy. Zero-Trac Barrel: The railless design reduces friction, increase speed, and improves accuracy. Sep 22, 2023 · What will be the kinetic energy of an arrow having a potential energy of 50 J? The kinetic energy of an arrow can be calculated using the formula KE = 0. Dec 20, 2024 · It’s crucial to understand how arrow weight affects speed, kinetic energy, and momentum. This is enough kinetic energy for large game like elk, black bear and wild boar. 1 Achieving Bone-Breaking Penetration: High FOC arrows are renowned for their unrivaled arrow penetration capabilities, allowing you to tackle even the toughest hunting scenarios. Momentum. I want the heaviest arrow to absorb and preserve the payload of kinetic energy downrange so that when contact is made the results are devastating. Kinetic energy in archery is basically weight of the arrow and the speed. The kinetic energy of this arrow is approximately 58, which fits into the standards used by many for small- and even medium-sized game, but the momentum of the arrow was at the low end, just 0. The killing power of an arrow is measured in Kinetic Energy. Most notably, and maybe even a bit surprising, the very slow and very heavy traditional arrow creates much less kinetic energy but still generates more momentum than the Oct 15, 2023 · Arrow Speed And Kinetic Energy: The speed of an arrow, along with its kinetic energy, plays a crucial role in the effectiveness of killing big game. A >200% increase in arrow mass yielded a <10% increase in kinetic energy. I've ran a 425 grain arrow for as long as I can remember with speeds from 250- 280. KE does the work, driving broadheads through hide, muscle and bone. Had a number of pass throughs on 6 points from 42-60 yards. This calculator computes the kinetic energy of an arrow based on its mass and velocity. Maximize Energy. When you consider the factors that affect penetration, and how these factors really work in the field, the whole argument about what bow/arrow/broadhead combination penetrates best is virtually moot. May 26, 2023 · Kinetic energy is not a good way to measure what an arrow does on an animal. FOC stands for Forward of Center balance point. Jul 11, 2017 · Although some is lost in conversion, most of the energy transferred from the bow and string to the arrow is used to propel it forward, giving the arrow kinetic energy (KE) during its flight. They talk gleefully about how the velocity factor in the equation for kinetic energy is "squared", or multiplied times itself, to give a dramatic increase to the theoretical kinetic energy delivered by the arrow and broadhead combination. Our reports reveal the truth behind what it really takes for an arrow to harvest big game animals quickly, effectively, and ethically. Each work in Oct 6, 2016 · Keeping in mind that the kinetic energy drops as the arrow flies, the speed will decrease as the arrow gets closer to the target. Big Game 42-65 FPKE. Use a bow/arrow setup that produces at least 50 ft. I have a set up that shoots around 54. What about the biggest, most dangerous game on earth like Cape buffalo and elephant? Measuring Arrow Energy. Arrow weight is measured on a grain scale and arrow velocity is found by shooting 3 days ago · For small game such as rabbits and squirrels, it is advisable to use an arrow that delivers up to 25 ft. k. We'll delve into the science behind high FOC arrows and how they optimize kinetic energy for bone-crushing penetration. Apr 21, 2017 · For those willing to dig into the physical science behind their setups and optimize performance, the easiest ways to find the perfect combination are through running calculations using different arrow selections and draw weights. The whole point when bowhunting is to hit where you aim. This measurement results from the relative weights of the components used in the arrow: shaft, insert, head, fletching and nock. 30 The arrow's orientation is assumed to be fixed to its velocity (angle of attack is always zero degrees). I shoot a Bowtech Tribute set at 70# with a draw length of 27. Jun 7, 2012 · Those statistics are interesting, but the true test of any product is how it performs in the field. I’ve calculated the distances where the arrow kinetic energy drops below these requirements. W. This is how the vast majority of bowhunters determine usable arrow Nov 30, 2022 · When it comes to bows, energy is stored in the limbs and cams when the bow is drawn, then transferred to the arrow shaft at the shot in the form of kinetic energy, or K. Jul 3, 2019 · Although speed is a key variable in the kinetic energy formula, mass (or weight) is at least equally as important, maybe even more important. Kinetic Energy is the power potential of the arrow at the target, which is based on the arrow’s weight and speed. For example, I will do the calculation with my setup. Kinetic energy is a major factor in arrow penetration. The arrow ballistics calculator below will help you determine your arrow’s vertical drop, speed, kinetic energy and momentum, for up to 70 yards out in 10 yard increments. 9 grains, and raw arrow speed is chronographed at 281 fps. The kinetic energy of the arrow leaving the bow increased from 73. But if you don't hit the vitals it wouldn't help shooting a 500 grain arrow with a 80 lb bow and a 3" head. For example, a reader writes: “I have read that kinetic energy of 50 ft. So on to Kinetic Energy (KE), which is super boring. 22 Caliber Energy. ). generated at the shot is 71. Arrow Mass grains. For hunting elk, a minimum of 40-50 ft-lbs of kinetic energy is recommended. That is an increase in arrow mass of 207%—a tripling of arrow mass. eie dwqtw lhbczk xryu ooqpf atdbeeer vdmn cczyjp vuyio fwmr pvlxr fxjiq izgdzcv qym lin