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Cartridge Efficiency vs Recoil
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<blockquote data-quote="J E Custom" data-source="post: 1298304" data-attributes="member: 2736"><p>We have done lots of testing to develop a superior muzzle brake, and before we started we needed to understand all of the cause and effects of what recoil was. </p><p></p><p>Your question is a good one but it can and does happen so I did some more testing of two .308 loadings with the same weight rifle, the same weight bullets and the same velocity using a short mag</p><p>with 65.0 grains of powder at a velocity of 3000 ft/sec. and a 308 win mag using a 150 grain bullet, at 3000 ft/sec propelled by 70 grains of powder (5 More Grains). </p><p></p><p>Here is the comparison of the two. </p><p></p><p>Short mag = Physical recoil from bullet = 6.4 ft/lbs</p><p>300 win mag = Physical recoil from bullet = 6.4 ft/lbs (The same for both because velocity, and bullet weight plus rifle weight are the same.</p><p></p><p>Short Mag Recoil energy from gas 13.4 ft/lbs from 65.0 grains of powder.</p><p>300 Win mag Recoil energy from gas 14.8 ft/lbs from 70 grains of powder. (1.4 ft/lbs more recoil)</p><p></p><p>Total recoil for the two rifles.</p><p>Short mag = 19.9 ft/lbs</p><p>Win Mag =21.2 (1.3+ ft/lbs more recoil.</p><p></p><p>The available gas recoil and the actual recoil difference was almost the same.</p><p></p><p>I have found that the more efficient the cartridge, the less powder it needs to reach the same velocity. Changing the recoil produced by the gas, will also reduce the total recoil. Muzzle brakes can only reduce the recoil produced by the gas, the bullet weight, rifle weight and velocity are the only things that can change the Physical recoil from bullet inertia .</p><p></p><p>Understanding this is necessary to design a more efficient brake. Tuning a brake to a specific load can improve recoil even more because it can remove more of the gas recoil of a specific cartridge/load combination.</p><p></p><p>I hope this helps you understand this phenomena. </p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1298304, member: 2736"] We have done lots of testing to develop a superior muzzle brake, and before we started we needed to understand all of the cause and effects of what recoil was. Your question is a good one but it can and does happen so I did some more testing of two .308 loadings with the same weight rifle, the same weight bullets and the same velocity using a short mag with 65.0 grains of powder at a velocity of 3000 ft/sec. and a 308 win mag using a 150 grain bullet, at 3000 ft/sec propelled by 70 grains of powder (5 More Grains). Here is the comparison of the two. Short mag = Physical recoil from bullet = 6.4 ft/lbs 300 win mag = Physical recoil from bullet = 6.4 ft/lbs (The same for both because velocity, and bullet weight plus rifle weight are the same. Short Mag Recoil energy from gas 13.4 ft/lbs from 65.0 grains of powder. 300 Win mag Recoil energy from gas 14.8 ft/lbs from 70 grains of powder. (1.4 ft/lbs more recoil) Total recoil for the two rifles. Short mag = 19.9 ft/lbs Win Mag =21.2 (1.3+ ft/lbs more recoil. The available gas recoil and the actual recoil difference was almost the same. I have found that the more efficient the cartridge, the less powder it needs to reach the same velocity. Changing the recoil produced by the gas, will also reduce the total recoil. Muzzle brakes can only reduce the recoil produced by the gas, the bullet weight, rifle weight and velocity are the only things that can change the Physical recoil from bullet inertia . Understanding this is necessary to design a more efficient brake. Tuning a brake to a specific load can improve recoil even more because it can remove more of the gas recoil of a specific cartridge/load combination. I hope this helps you understand this phenomena. J E CUSTOM [/QUOTE]
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