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Rifle Recoil: When It's Time to Step Down. Reproduction in whole or in part without permission is prohibited. And to make it interesting we'll say the powder charge weighs 30 grains. We measure recoil energy in foot pounds. RIFLE RECOIL. The deer kicks his butt. 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. 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. Slip on a recoil pad. 508225/8 pounds = 63528.125. Now we add to this the weight of the bullet, which gives us 222.5. Take the 508225 and divide it by the weight of the rifle in pounds. ||||| 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. 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. Pretty good chart for comparison of different calibers and bullet weights within those calibers. We have an honest to goodness recoil velocity of 11.6547, or thereabouts. Now multiply this by the muzzle velocity 175.25 X 2900 = 508225. 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. ), comes out to 12.655. What could be simpler? See your local retailer to purchaseÂ these pads. 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. We love how she refuses to get involved.) Use this calculator to calculate the recoil on you rifles, handgun, and other firearms. Explanation of terms. 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?). September 18, 2007. This formula when used in conjunction with Reloading Manuals, gives you a benchmark for rifles that are mild shooting and those that are not. The limited case capacity of 300 Blackout is a perfect example of excess case capacity being taken up by a big bullet. ((((Wb+(Wp x 1.75)) x Vm)/Wr)/7000)^2 x Wr, http://www.outdoorlife.com/articles/guns/rifles/2007/09/calculate-recoil-energ. Does this mean the recoil of a little 6 pound .30/30 is 12.655 pounds? Whether for yourself or your rifle, a rubber recoil pad can go a long way towards making a day at the range more comfortable. Let's take a break. 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. These include the weight and shape of the stock and how they fit you. 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. Recoil Calculator at HuntAmerica.com. Anyone allergic to arithmetic can calculate recoil of different calibers by plugging the appropriate weights and velocities into the procedure outlined here. R= Recoil. 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. So I have my recoil energy, now what? Or use this calculator below which does it easily and includes products like recoil velocity and recoil impulse. Â Add this to the weight of the bullet 100 + 75.25 = 175.25. Well, I'll be damned! 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 … This is a great way to validate the formula findings. Multiply this by the weight of the rifle in pounds, 82.355 x 8 = 658.845. Do not forget that rifle weight is a crucial factor in the recoil equation, inversely proportional to recoil. The Kimber weighs 4 lbs. All rights reserved. The rifle, on the other hand, has a mass (m R) of 3,632 grams, since there are 454 grams in a pound. (Apparently the fella's wife is the one working the camera. 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. Calculate recoil from muzzle velocity and bullet, powder and rifle weight. The 8 lb. Take the weight of the powder and multiply by a factor of 1.75 = 75.25. The deer kicks his butt. Cool Rifle Recoil Table. Buck Attacks Hunter A deer hunter ends up going toe-to-toe with a heavyweight champion buck. Let me put another demo to make you clearer once again. A Bonnier Corporation Company. Plug in the right numbers, and you can calculate recoil energy. Calculate Your Rifle’s Recoil. Then, Recoil= (10*14.86)/ (2*32.174) So, Recoil= 34.32 ft pounds. Do not forget that rifle weight is a crucial factor in the recoil equation, inversely proportional to recoil. and the square is 135.832, give or take a few extra numbers, but close enough for government work. Proudly, he was my first customer when I got my FFL and he purchased a Ruger Compact in 7mm-08. 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. 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 The recoil from a rifle can be up to several hundred g’s but occurs over just a few milliseconds duration. Please bear in mind that there are several factors affecting the "felt recoil" of any rifle that you shoot. rifle has a recoil of energy of 14 ft-lb but the 4 lb. This energy is the figure most often given in books and magazines. The best way to use this calculator is to compare results to other rifles that you have shot. In 2002, I purchased a Ruger Compact in 308. RW= Rifle weight. My brother Kyle fell in love with it the first time he saw it. Kimber jumps to 23.3 ft … 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. A comprehensive collection of interactive, online ballistics calculators! 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. 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. Here it is.) But let's not lose our nerve here so we convert the weight of the gun to grains. Increase the gun weight by, say, 25% and the recoil goes down by 25%. (Apparently the fella's wife is the one working the camera. In the real world, firearms chambered for less powerful cartridges are typically built lighter than firearms chambered for more powerful cartridges. Exterior Ballistics, Recoil Calculator, Wound Channel Calculator, Stopping Power Calculators (mutiple), Round Ball Weight Calculator, Powder Calculators, and more! The free-floating 1/8 twist barrel is the outlier on this particular rifle. If you round your intermediate data it may vary slightly from the on-line calculator. 13 oz. Now divide this by 7000 grains per pound. 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. Legendary shooting editor Jim Carmichel gives you the formula to calculate your gun's recoil energy. Outdoor Life may receive financial compensation for products purchased through this site. Rifle Recoil . Finally divide this by the acceleration of gravity 64.4 fps/sec = 10.23 ft-lbs Recoil. How to calculate recoil in a rifle. |---|---|---|---| Increase the gun weight by, say, 25% and the recoil goes down by 25%. 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. The recoil at muzzle exit is simpler to estimate correctly. Â 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. These are good things to remember when comparing rifle cartridges, and at the range. The longer you shoot, and the harder the rifle kicks, the more likely you are to flinch. 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.Â 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. 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. A couple of comparisons of different cartridges. I own these pads for Â my rifles. 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. I like to think that based on my manyÂ 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. Let’s compare a weak 12 Gauge load with a powerful one, but we’ll keep things simpler by omitting … Reloading handbooks are a ready source of bullets, powders and muzzle velocities. Welcome to Rifle Recoil 101. Recoil in Ft- Lb Â =Â Â Â  ((((Wb+(Wp x 1.75)) x Vm)/Wr)/7000)^2 x WrÂ  / 64.4, Ga = Acceleration of gravity 64.4 fps/sec. 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 Reduces weapon recoil by 5% per stack of Cold Blood. Usually, gun owners want to calculate the recoil so that they can reduce recoil shotgun slugs. 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. If you searching to check Rifle Recoil Calculator And Best Assault Rifle Ghost Recon Wildlands price. 5. Calculate Recoil Energy. Adding a pair at 15 total ounces will reduce the Tikka and 6.5 Creedmoor Ruger Precision Rifle's recoil energy by 8%. VG= Velocity of the gun. 13 oz. Many products featured on this site were editorially chosen. That’s the same unit we use to measure muzzle energy. Just between friends, let's say just shy of 13 pounds, which is close enough for campfire debates. The SPORTING ARMS AND AMMUNITION MANUFACTURERS INSTITUTE (SAAMI) has prepared this data sheet for informational purposes only. The more I shoot it, the more I like it. The following chart assumes an 8 pound gun weight. In the table below rifle weight is given in pounds, free recoil energy is given in foot pounds, and free recoil … Jim Carmichel of Outdoor Life revealsÂ 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. Wow, this is really getting complicated. 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} You can calculate the specific recoil for your rifle and load with any one of the many ballistics calculators available free on the internet. Rifle Recoil Table. Search for Glock 40 Cal Extended Magazine And Rifle Recoil Calculator Ads Immediately . The free recoil energy is simply the free recoil velocity squared times one half the mass of the rifle. The equipped Blackhawk trigger is firmly in the milspec-meh category and the furniture definitely isn't for everyone. 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. Multiply by the weight of the gun and divide by twice the acceleration of gravity, and you get the recoil energy in foot pounds. Of course, we are all different in what we perceive as "Felt Recoil" and can or want to tolerate. 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. A little discussion on how recoil can be increased or decreased. 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. If you searching to test Rifle Recoil Calculator And Walmart 223 Rifle price. 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