September 18, 2007. of free recoil, at 1250 feet per second about 23 ft./lbs., and at 1300 feet per second almost 25 ft./lbs. Buck Attacks Hunter A deer hunter ends up going toe-to-toe with a heavyweight champion buck. Bloodbath. That’s because decreases in shot charge weight have the most significant effect on decreasing recoil. EXAMPLE: How much Free Recoil Energy would be developed by an average length shotgun weighing 7 pounds firing a 12 ga 2¾ - 3½ load of No. Based on attributes. Recoil Calculator at HuntAmerica.com. If you feel the recoil in your face, like a slap or harder, then it’s gun fit and/or gun mount technique. Shotgun Recoil Energy, Impulse & Velocity Calculator. Only 7 left in stock - order soon. It’s that simple. Perhaps it would be more accurate for me to say that porting does work to reduce shotgun recoil, but it doesn’t do it enough to matter. Perk Points. . He is a court-recognized shotshell/shotgun expert witness. For those who have shot both, preferable from an interchangeable barreled gun, do you find this to be true? It’s what you have to do if you want to shoot 1300 or so feet per second loads and not have them erode your shooting. Kick EEZ Recoil Pad Spacer for gun stock 1/4 inch 4.3 out of 5 stars 23. Using an online recoil calculator I compared the following loads. The Math / Science This recoil is … ... Reduces recoil of Shotguns and Light Machine Guns by 20%. You need JavaScript enabled to view it. Tom was formerly the Ballistics Research Director at Oregon Institute of Technology and then served as a Ballistics Specialist for the Dept. of free recoil. 4 shot with wads weighing 43 grains and loaded with 33.4 grains of powder. Change ), You are commenting using your Twitter account. Increasing the weight of the gun will reduce recoil on about a 1:1 basis (sort of). What to do? These readers gain a competitive advantage from the valuable advice delivered directly to their inbox. You can input specifics for your ammunition (e.g. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. It also incorporates a constant for the speed of gas escaping (jet effect). At 1200 feet per second it delivers to the shooter about 21.5 ft./lbs. If you need more velocity to help your “leads,” then shoot one ounce or lighter loads in the same eight-pound gun. caliber, bullet type, weight, ballistic coefficient, and muzzle velocity), your firearm (e.g. Contact him in Oregon at (541) 884-2974, This email address is being protected from spambots. Calculating Recoil Velocity In a typical recoil situation, the release of a body of smaller mass (body 1) has an impact on a larger body (body 2). Tom was formerly the Ballistics Research Director at Oregon Institute of Technology and then served as a Ballistics Specialist for the Dept. In these capacities he designed and administered the world’s six most extensive lead versus nontoxic shot duck, goose, pheasant and dove shooting tests ever conducted. These payloads and velocities are all from current Winchester AA loads. Change ). The Gas Operated Semi-Auto Shotguns have the least of the Semi-Auto Shotguns. My Cyberpunk build. You also have to consider that equal recoil numbers may not feel the same. A 1 5/8 inch drop at the comb, a 2 1/2 inch drop at the heel will prove correct for at least 95% of the shooters. It takes into account the weight of the gun, weight of the ejecta (shot, wad, amount of powder) and the velocity of the ejecta. Type in the appropriate values & click the Calculate button. Recoil energy calculator This program calculates the recoil energy when you shoot a shotgun. Only 3 left in stock - order soon. Contact him in Oregon at (541) 884-2974, Gamebore Target Loads Cross the Atlantic to the U.S. Market, Consider Reloading for Truly Customized Shotshell Loads, Beware Shoddy Barrel Modifications — Part 2, Beware of Shoddy Barrel Modifications — Part 1. document.getElementById('cloak8fd8885eca91d112c27f3bba1461f722').innerHTML = ''; Simple. 30 06 hunting shotgun slugs 20 gauge vs 12 slide 2 slide 2 the best ammo for your remington 870 Low Recoil Practice Lo Shooting SportsmanShotgun Recoil Chart Amr20 Gauge Slug Recoil Chart Pflag12 Gauge ShotgunShooterscalculator Recoil CalculatorPractical To The Tactical Shotgun Gun DigestShotgunworld Recoil Measurements By ShotgunShotgun Recoil Chart … Oh, by the way, if you’re a 150-pound shooter but you’re shooting less than an eight-pound gun – gas-operated autoloader or not – you’re not going to be able to handle even 17 ft./lbs. This email address is being protected from spambots. Yet in my experience, no amount of holes in a shotgun barrel has ever made the slightest difference in what my shoulder feels. temperature, wind speed, and altitude). I shoot a 7 pound 20 guage O/U (Browning 525 Sporting. Never in doubt.) Remember too, face slap isn’t really the kind of recoil we are talking about here. (Often in error. load weight in ounces, the muzzle velocity. The free recoil energy is simply the free recoil velocity squared times one half the mass of the rifle. Roster spends about 100 days afield each year testing  lead and nontoxic hunting and target shotshell loads, then traveling worldwide reporting on his findings to industry and wildlife professionals, hunters and shooters, and in his writings for various shotgunning magazines. Lowering the recoil of the gun will help, but will not cure, a poorly fit gun. It’s also called Free Recoil. The O/U gives you a punch (all the recoil at once), while the gas gun gives you a push (same recoil but delivered over more time). The formula does not take into account any possible recoil reduction due to overboring, long cones or porting. $14.99. Recoil Energy in foot pounds = (Bw Mv + 4700 Pw)” / 64.348 Gw where Gw = weight of gun in pounds, Bw = weight of the ejecta (shot and wad) in pounds. Change ), You are commenting using your Google account. Enter your email address to follow this blog and receive notifications of new posts by email. 2 3/4 inch AA or STP shells at 1200 Ft. per sec. of free recoil is going to be the absolute max. of recoil to your shoulder and face through the same gun. This assumes that the 20 gauge is a 6.5 lb gun and the 12 gauge is a 7.5 lb gun. If both bodies start from rest, the law of conservation of momentum states that m 1 v 1 = -m 2 v 2. of free recoil. There are numerous others. My uncle had 2 single shot 12 gauge, which at a glance appeared to be identical, but there was a slight difference in the angle of the stock. This energy is the figure most often given in books and magazines. Forget about jumping up to ever higher velocity loads. using 7/8 ounce of #8’s. PO Box 6423Thomasville, GA 31758Phone: 229-236-1632. Now, check out this 12 Gauge shell with a 1 oz slug and 1,560 fps muzzle velocity. One of the most important of these, in addition to gun weight, is the fit and shape of the gun stock. One is to increase gun weight; the second is to install a spring effect between the gun and the shoulder, i.e., recoil pad, other compressible device, or a gas-operated autoloading action; the third is to reduce the actual recoil created by the shotshell load itself. 1/1. It is influenced by many factors. Our goal is to provide you with the best coverage in wing and clays shooting. Maybe I’m just too insensitive. 50. 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