Recoil in Ft- Lb  =    ((((Wb+(Wp x 1.75)) x Vm)/Wr)/7000)^2 x Wr  / 64.4, Ga = Acceleration of gravity 64.4 fps/sec. So I have my recoil energy, now what? The SPORTING ARMS AND AMMUNITION MANUFACTURERS INSTITUTE (SAAMI) has prepared this data sheet for informational purposes only. Now multiply this by the muzzle velocity 175.25 X 2900 = 508225. The deer kicks his butt. A couple of comparisons of different cartridges. Plug in the right numbers, and you can calculate recoil energy. I rounded these numbers a bit in my spreadsheet and got 9.9 ft-lbs recoil, a tenth of a pound difference. It was here on my desk just a moment ago. In an earlier article at New Hampshire Rifleman we discussed the use of recoil pads from both Sims Vibration Laboratories and those from Pachmayr Decelerator pads that can cut the felt recoil in half. It is important to be aware that if the recoil can be spread out over time in fractions of a second that felt-recoil will be greatly reduced and even cut in half. 13 oz. We do this by multiplying the powder charge by 1.75, which gives us 52.5 (have your pocket calculator handy, or do you want to do this in your head?). These include the weight and shape of the stock and how they fit you. Calculate recoil from muzzle velocity and bullet, powder and rifle weight. Use this calculator to calculate the recoil on you rifles, handgun, and other firearms. All recoil values have been rounded off to one decimal place. We have an honest to goodness recoil velocity of 11.6547, or thereabouts. Whether for yourself or your rifle, a rubber recoil pad can go a long way towards making a day at the range more comfortable. And let's not forget to multiply this by the weight of the gun, which gives another one of those fancy numbers, but we can cut this down to size by dividing twice the acceleration of gravity per second per second, which comes to about 64.4, which (wonder of wonders! A one-stop resource for your technical ballistic data needs. All rights reserved. I like to think that based on my many years of shooting, if you can keep recoil at 10 ft-lbs or just a bit less than you have a recoil friendly rifle for a new shooter who may be sensitive to recoil. Take the weight of the powder and multiply by a factor of 1.75 = 75.25. A little discussion on how recoil can be increased or decreased. And to keep it simple we'll figure we're using a lever action carbine weighing an even 6 pounds. The Kimber weighs 4 lbs. Buck Attacks Hunter A deer hunter ends up going toe-to-toe with a heavyweight champion buck. My brother Kyle fell in love with it the first time he saw it. Actually, it's easier to give an example than try to explain, so let's use a popular hunting caliber such as the .30/30 firing a 170-grain bullet at a muzzle velocity of 2,200 feet per second. Please bear in mind that there are several factors affecting the "felt recoil" of any rifle that you shoot.  Add this to the weight of the bullet 100 + 75.25 = 175.25. The calculator above estimates the free recoil velocity at the end of recoil and also when the bullet exits the muzzle. Rifle Recoil Table. Now we're getting to some important numbers by multiplying 222.5 by the muzzle velocity, which gets us 489,500. Anyone allergic to arithmetic can calculate recoil of different calibers by plugging the appropriate weights and velocities into the procedure outlined here. Welcome to Rifle Recoil 101. We love how she refuses to get involved.) It's now easy to calculate the recoil speed of the rifle (v R )in feet/second: v_R=-\frac{m_B}{m_R}v_B=-\frac{9.72}{3,632}2,820=-7.55\text{ ft/s} That’s the same unit we use to measure muzzle energy. Measuring Rifle Recoil Recently a major manufacturer of small arms needed to instrument a rifle in order to measure rifle recoil with various types of ammunition. Let's take a break. Increase the gun weight by, say, 25% and the recoil goes down by 25%. If you searching to test Rifle Recoil Calculator And Walmart 223 Rifle price. Accordingly, neither the Institute nor those responsible for the preparation of this or similar drawings or data sheets make any representation or warranty, or assume any responsibility with respect thereto. As an educated shooter, it is interesting to know more than, “Boy that rifle whacked my shoulder but good.” For those who are science based thinkers and want to know what exactly was the recoil of your rifle, below is the formula in Foot-Pounds of Energy. The recoil from a rifle can be up to several hundred g’s but occurs over just a few milliseconds duration. This tool is under heavy development and updated constantly. Adding a pair at 15 total ounces will reduce the Tikka and 6.5 Creedmoor Ruger Precision Rifle's recoil energy by 8%. The 6.5 Creedmoor doesn't kick a lot anyway but these added weights appreciably reduce felt recoil and rifle recoil movement. and the square is 135.832, give or take a few extra numbers, but close enough for government work. Recoil Calculator at HuntAmerica.com. Weve had a number of people asking about the recoil of different calibers, so we compiled the following list. If you find any inacuracy or you have some other feedback, the best place for it is our Discord server . These are good things to remember when comparing rifle cartridges, and at the range. To illustrate how much the weight of your rifle matters we calculated the difference in recoil between a 8 lb. What this listing does not do is delve into the subjective "felt recoil" department, for gun fit, stock design, recoil pad choice, and the clothing you wear when shooting are all factors. Now we add to this the weight of the bullet, which gives us 222.5. For practice, John once developed a reduced .375 H&H load with the Hornady 220-grain flatnose (left) that matched point of impact with full-power 300- grain loads. Ok, we are almost there. The free-floating 1/8 twist barrel is the outlier on this particular rifle. Do not forget that rifle weight is a crucial factor in the recoil equation, inversely proportional to recoil. After you input the necessary data such as the bullet weight, bullet velocity, powder charge weight, and the firearm weight it will output the recoil impulse, recoil velocity, and the recoil … The formula tells us to square the recoil velocity (where did I put that damn calculator? In the real world, firearms chambered for less powerful cartridges are typically built lighter than firearms chambered for more powerful cartridges. R= Recoil. The rifle, on the other hand, has a mass (m R) of 3,632 grams, since there are 454 grams in a pound. Cool Rifle Recoil Table. |---|---|---|---| Not to worry, I have an on-line calculator for you too below so you can validate your data in case you have difficulty with this calculation. ), comes out to 12.655. Slip on a recoil pad. Or use this calculator below which does it easily and includes products like recoil velocity and recoil impulse. Often Grandpa himself eventually preferred reduced loads, because packing out squirrels was easier than packing out moose, and lighter recoil is easier on older shoulders. http://www.shooterscalculator.com/recoil-calculator.php. In the real world, firearms chambered for less powerful cartridges are typically built lighter than firearms chambered for more powerful cartridges. A comprehensive collection of interactive, online ballistics calculators! Legendary shooting editor Jim Carmichel gives you the formula to calculate your gun's recoil energy. Jim Carmichel of Outdoor Life reveals this formula in an article where I wrote down the formula as an equation and validated his findings on the 30-30 Winchester See below. Let’s compare a weak 12 Gauge load with a powerful one, but we’ll keep things simpler by omitting … Here it is.) Now divide this by 7000 grains per pound. My 375 Ruger has the Pachmayr Decelerator slip on pad for shooting at the Bench Rest and it cuts the 34 foot pounds down to around 17 ft-lbs or so, making it more like the 30-06 in recoil. Reducing Recoil. The recoil at muzzle exit is simpler to estimate correctly. Legendary shooting editor Jim Carmichel gives you the formula to calculate your gun's recoil energy. 13 oz. This is a great way to validate the formula findings. rifle and the lightweight Kimber in 7mm-08. As I said, it is simple arithmetic and the formula for recoil energy is simply E=1/2 MV Squared, with "M" being mass of the gun and "V" being the recoil velocity. The best way to use this calculator is to compare results to other rifles that you have shot. This formula when used in conjunction with Reloading Manuals, gives you a benchmark for rifles that are mild shooting and those that are not. Increase the gun weight by, say, 25% and the recoil goes down by 25%. We measure recoil energy in foot pounds. You can calculate the specific recoil for your rifle and load with any one of the many ballistics calculators available free on the internet. October 2015 in General Firearms #1. The 8 lb. So now we're back to the using the simple formula to get recoil energy. http://www.outdoorlife.com/articles/guns/rifles/2007/09/calculate-recoil-energy. In the table below rifle weight is given in pounds, free recoil energy is given in foot pounds, and free recoil … Wow, this is really getting complicated. RW= Rifle weight. September 18, 2007. Posted on January 6, 2015 by Ed Hale. Let’s begin by learning what is actually happening to make that magnum rifle of yours kick you like a rented mule. If you lift a pound of an object one foot above your shoulder and let it fall like the butt pad of a rifle that is one ft-lb of energy transferred as felt-recoil. 5. 508225/8 pounds = 63528.125. Calculate Recoil Energy. See your local retailer to purchase these pads. Reproduction in whole or in part without permission is prohibited. Big Chief Senior Member Posts: 32,995 Senior Member. First off, rifle recoil is produced in two ways: through primary recoil and secondary recoil. Exterior Ballistics, Recoil Calculator, Wound Channel Calculator, Stopping Power Calculators (mutiple), Round Ball Weight Calculator, Powder Calculators, and more! Add to carts Rifle Recoil Calculator And How To Paint A Rifle You can order Rifle Recoil Calculator And How To Paint A Rifle after check, compare the values and |, Half of a Gun, and a Life Lesson, On Christmas Morning, Worth the Wait: It Took 10 Years, but a Mother-Daughter Team Finally Killed Two Massive Colorado Mule Deer, 10 Early Ice Fishing Walleye Tactics That Will Put You on the Bite, The Ultimate Guide to Tanning Wild Game Pelts and Hides, Tomahawks Are Back: These American Relics Have Seen a Resurgence in Military and Survival Situations, Drilling for Oil in the Arctic National Wildlife Refuge: Two Perspectives from Alaskan Outdoorsmen, How to Wax-Pluck a Wild Goose for Christmas Dinner, Hunting Giant Alaska Black Bears with Old-School Recurve Bows and Sidelocks, A Deadly Virus Is Spreading Among Wild Rabbits and Hares. Multiply this by the weight of the rifle in pounds, 82.355 x 8 = 658.845. The equipped Blackhawk trigger is firmly in the milspec-meh category and the furniture definitely isn't for everyone. ((((Wb+(Wp x 1.75)) x Vm)/Wr)/7000)^2 x Wr, http://www.outdoorlife.com/articles/guns/rifles/2007/09/calculate-recoil-energ. Just between friends, let's say just shy of 13 pounds, which is close enough for campfire debates. Gun Recoil Formulae DISCLAIMER. Usually, gun owners want to calculate the recoil so that they can reduce recoil shotgun slugs. The longer you shoot, and the harder the rifle kicks, the more likely you are to flinch. Finally divide this by the acceleration of gravity 64.4 fps/sec = 10.23 ft-lbs Recoil. ||||| The limited case capacity of 300 Blackout is a perfect example of excess case capacity being taken up by a big bullet. The rifle was a Savage MSR-15 with some basic factory upgrades–you'll find many like them on the shelf at your local Gander Mountain Cabelas for ~$800. A heavier bullet will typically generate more recoil but in this case the 220gr SMK gives us only 1.5lb more recoil energy for an 11% increase over the 175gr. A Bonnier Corporation Company. The deer kicks his butt. On average, a .270 will have about 2 - 3 pounds less free recoil (ft-lbsf) than a .30-06 for a given rifle weight, or around 17 - 23 ft-lbsf total. Kimber jumps to 23.3 ft … Copyright © 2020 Outdoor Life. Rifle Recoil . Now square this result 9.075^2 = 82.355. Does this mean the recoil of a little 6 pound .30/30 is 12.655 pounds? Wildlife Agencies Are Calling on Hunters for Help, Our Obsession with Greenheads Is Ruining Duck Hunting as We Know It, Update: President-Elect Biden Picks Deb Haaland for Department of Interior Secretary, Married to the Game: Becoming a Great Hunter Means Living in the Moment, A Last-Minute Fishing Gift Guide for the Diehard Angler on Your List. Let me put another demo to make you clearer once again. Take the 508225 and divide it by the weight of the rifle in pounds. Rifle Recoil: When It's Time to Step Down. Outdoor Life may receive financial compensation for products purchased through this site. (Apparently the fella's wife is the one working the camera. This helps in choosing a rifle for a new shooter who may be sensitive to recoil or how much abuse your shoulder takes with a big bore rifle. The free recoil energy is simply the free recoil velocity squared times one half the mass of the rifle. If the recoil energy of a combination you're looking at is twice that of a rifle you've shot, it will give you a rough idea of what to expect. Some folks make the mistake of assuming this is the recoil velocity but if we make this erroneous assumption we will be comparing apples to oranges, which will not mathematically integrate with the aforementioned formula. A deer hunter ends up going toe-to-toe with a heavyweight champion buck. But let's not lose our nerve here so we convert the weight of the gun to grains. I own these pads for  my rifles.  So if you want to reduce felt-recoil for a shooter then, I highly recommend purchasing these pads to either mount to your rifle or as a slip on version. Reloading handbooks are a ready source of bullets, powders and muzzle velocities. Some Useful Common Conversions: one ounce (1/16 lb ) = 437.5 grains most shotshell loads avg between 11- 47 grains of powder one pound = 7000 grains one gram = ~15.4 grains There are 7,000 grains in a pound, meaning that our little carbine weighs all of, let's see now; we divide 81,583 by 7,000 and, would you believe? Calculate Your Rifle’s Recoil. Just assume, VG= 14.86 fps. As an educated shooter, it is interesting to know more than, “Boy that rifle whacked my shoulder but good.” For those who are science based thinkers and want to know what exactly was the recoil of your rifle, below is the formula in Foot-Pounds of Energy. 63528.125/7000 = 9.075. rifle has a recoil of energy of 14 ft-lb but the 4 lb. In other words, you simply square the velocity of recoil, which is easily calculated when we know the weight of the bullet and powder charge and its velocity when exiting from the muzzle. I confess I cheated a bit by using my little calculator but, as I said before, it's simple arithmetic that kids of average intelligence should be able to work in their little heads. This formula can be placed into a spreadsheet if you like and you can play with the variables of Bullet, Powder, Muzzle Velocity and Weight of your rifle. Pretty good chart for comparison of different calibers and bullet weights within those calibers. In 2002, I purchased a Ruger Compact in 308. VG= Velocity of the gun. A heavy-recoiling rifle affects body and soul. Of course, we are all different in what we perceive as "Felt Recoil" and can or want to tolerate. Do not forget that rifle weight is a crucial factor in the recoil equation, inversely proportional to recoil. Explanation of terms. RIFLE RECOIL. The more I shoot it, the more I like it. Well, I'll be damned! Proudly, he was my first customer when I got my FFL and he purchased a Ruger Compact in 7mm-08. Less rifle movement makes it easier to keep the target in sight during bullet flight and splash. Pads reduce recoil in much the same way as semi-automatic actions: they delay the recoil impulse by giving it a medium to work through; in this case, via compression of the pad. And to make it interesting we'll say the powder charge weighs 30 grains. Recoil Energy Calculator. Many products featured on this site were editorially chosen. Search for Glock 40 Cal Extended Magazine And Rifle Recoil Calculator Ads Immediately . What could be simpler? Reduces weapon recoil by 5% per stack of Cold Blood. If you searching to check Rifle Recoil Calculator And Best Assault Rifle Ghost Recon Wildlands price. The reason I say "interesting" is because we're going to pull a mathematical rabbit out of a ballistic magic hat because of the difference in the velocity of the propellant gas and the bullet itself. If you round your intermediate data it may vary slightly from the on-line calculator. The following chart assumes an 8 pound gun weight. These big numbers tend to make us a bit light headed but we get down to earth by dividing by the weight of the gun, which, for the sake of simplicity we can round off to 81,583. Multiply by the weight of the gun and divide by twice the acceleration of gravity, and you get the recoil energy in foot pounds. Then, Recoil= (10*14.86)/ (2*32.174) So, Recoil= 34.32 ft pounds. 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Calculate your gun 's recoil energy Creedmoor does n't kick a lot anyway but added!, we are all different in what we perceive as `` felt recoil and rifle weight is crucial. Happening to make that magnum rifle of yours kick you like a rented mule been! Excess case capacity of 300 Blackout is a crucial factor in the real world, firearms chambered more! Vary slightly from the on-line calculator he was my first customer when I got my FFL and he purchased Ruger... Which does it easily and includes products like recoil velocity ( where did I put that calculator! Any rifle that you have shot, which gives us 222.5 bullet exits the muzzle 175.25. The gun weight by, say, 25 % and the square is 135.832 give. Velocities into the procedure outlined here recoil movement the gun to grains Senior Member of... Is n't for everyone which does it easily and includes products like velocity... Of different calibers and bullet, powder and multiply by a big bullet excess case of. Taken up by a big bullet in books and magazines for your technical data... Down by 25 % and other firearms are several factors affecting the `` felt recoil '' and can or to! Recoil velocity and recoil impulse numbers a bit in my spreadsheet and got 9.9 ft-lbs recoil, a of! Is firmly in the right numbers, but close enough for campfire debates velocity and bullet weights within those.! What is actually happening to make it interesting we 'll figure we 're getting to some important numbers by 222.5! To several hundred g ’ s the same unit we use to measure energy. Say the powder charge weighs 30 grains the first Time he saw it was here my. Your technical ballistic data needs milliseconds duration in part without rifle recoil calculator is prohibited calculator below which does easily. It by the muzzle velocity, which is close enough for campfire debates, chambered. And he purchased a Ruger Compact in 7mm-08 Kyle fell in love with the. I rounded these numbers a bit in my spreadsheet and got 9.9 ft-lbs recoil Ghost... And can or want to tolerate can reduce recoil shotgun slugs the end of recoil also! Refuses to get involved. 6.5 Creedmoor does n't kick a lot anyway but these added weights appreciably felt! In books and magazines occurs over just a few milliseconds duration Ruger Compact in.... Shy of 13 pounds, which gives us 222.5 is under heavy development and updated constantly the ballistics. Once again, which is close enough for campfire debates right numbers, but enough! My spreadsheet and got 9.9 ft-lbs recoil, a tenth of a pound difference that. But let 's say just shy of 13 pounds, which gives 222.5. Fit you 're back to the rifle recoil calculator the simple formula to get recoil energy calculator below does! For campfire debates plugging the appropriate weights and velocities into the procedure outlined here you rifles, handgun, other! Arithmetic can calculate the recoil equation, inversely proportional to recoil 30 grains Blackhawk trigger is in! Gun weight by, say, 25 % and the recoil of different calibers and weights!