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recoil v accuracy
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<blockquote data-quote="westcliffe01" data-source="post: 523808" data-attributes="member: 35183"><p>If we take an obvious candidate for high recoil, the 50bmg, a 750gr bullet is accelerated to 2800fps and has an energy of 13 000 ftlb when it leaves the muzzle. The same amount of energy is transferred to the rifle and shooter, with the only difference being the mass of the rifle and shooter compared to the bullet, as well as the fact that the rifle acts on the shooter over a larger surface area than the bullet does at the target. In most cases, the bullet does not expend all of its energy on the target, in addition to which the bullet has lost considerable energy on the way to the target through aerodynamic drag.</p><p></p><p>Assuming the rifle weighs 14lb and back calculating from the bullets muzzle energy, it works out that the rifle would recoil at 43fps, which sounds a lot more survivable when meeting a rifle butt, than the bullet at 2800fps.... Taking the average speed of recoil of the rifle to be 43fps and the duration of the flight of the bullet in the barrel to be 2ms (it might be less), the rifle would move back 1", not yet accounting for muzzle blast. if the shooter was holding onto the rifle real tight, like I would and I weigh 225lb, things look a little different. Now the shooter/rifle combined weight is 239lb and the recoil velocity is just over 10fps. In the same 2ms movement of the shooter and rifle would be 1/4" (not taking muzzle blast into account).</p><p></p><p>Is this kind of recoil going to get your attention ? Hell yes ! Is there a lot of opportunity for the bore to become misaligned with the target (especially if at a range of 1 mile ?) Hell Yes !. I do not know this for a fact, but I am guessing that only the best shots get to be behind a 50 sniper rifle, since I am sure they are not easy to shoot well, are punishing on the body, are big and heavy to lug around and one physically cannot carry much ammo around with you. Devastating in the right hands, but equally useless in the hands of someone who can't handle it.</p><p></p><p>A lot of the heavy recoiling "big game" rifles were saved by the fact that they were often shot at point blank range, and when shooting one had much more important things to worry about than how much your shoulder was going to hurt from firing. Miss the shot on the charging lion, elephant or buffalo and pretty soon you would be hurting in a lot worse ways ! Probably for the last time too.</p></blockquote><p></p>
[QUOTE="westcliffe01, post: 523808, member: 35183"] If we take an obvious candidate for high recoil, the 50bmg, a 750gr bullet is accelerated to 2800fps and has an energy of 13 000 ftlb when it leaves the muzzle. The same amount of energy is transferred to the rifle and shooter, with the only difference being the mass of the rifle and shooter compared to the bullet, as well as the fact that the rifle acts on the shooter over a larger surface area than the bullet does at the target. In most cases, the bullet does not expend all of its energy on the target, in addition to which the bullet has lost considerable energy on the way to the target through aerodynamic drag. Assuming the rifle weighs 14lb and back calculating from the bullets muzzle energy, it works out that the rifle would recoil at 43fps, which sounds a lot more survivable when meeting a rifle butt, than the bullet at 2800fps.... Taking the average speed of recoil of the rifle to be 43fps and the duration of the flight of the bullet in the barrel to be 2ms (it might be less), the rifle would move back 1", not yet accounting for muzzle blast. if the shooter was holding onto the rifle real tight, like I would and I weigh 225lb, things look a little different. Now the shooter/rifle combined weight is 239lb and the recoil velocity is just over 10fps. In the same 2ms movement of the shooter and rifle would be 1/4" (not taking muzzle blast into account). Is this kind of recoil going to get your attention ? Hell yes ! Is there a lot of opportunity for the bore to become misaligned with the target (especially if at a range of 1 mile ?) Hell Yes !. I do not know this for a fact, but I am guessing that only the best shots get to be behind a 50 sniper rifle, since I am sure they are not easy to shoot well, are punishing on the body, are big and heavy to lug around and one physically cannot carry much ammo around with you. Devastating in the right hands, but equally useless in the hands of someone who can't handle it. A lot of the heavy recoiling "big game" rifles were saved by the fact that they were often shot at point blank range, and when shooting one had much more important things to worry about than how much your shoulder was going to hurt from firing. Miss the shot on the charging lion, elephant or buffalo and pretty soon you would be hurting in a lot worse ways ! Probably for the last time too. [/QUOTE]
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