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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Do cartridge case dimensions affect recoil?
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<blockquote data-quote="DMCI" data-source="post: 441416" data-attributes="member: 1730"><p>A very excellent question for a sophmore physics student. You have a good intuitive feel for the question, but like many average Americans, **** little science to back it up.</p><p></p><p>Energy is for a moving body is defined as E = 1/2 M V^2. The up arrow for purpose here will mean to the power of. The equation therefore is 1/2 Mass times Velocity squared. Mass is actually Weight/g, where g is the earth gravitation constant in english units of about 32.2 f/sec^2. E1 is generated by firing bullet and powder out the barrel</p><p></p><p>Ok.</p><p></p><p>So bullet, powder leave the barrel at great speed. This generates a reaction equal and opposite which can be the recoil.</p><p></p><p>E2 is the reaction of the gun and is equal to E1. (According to Newton's third law: The mutual forces of action and reaction between two bodies are equal, opposite and collinear.)</p><p></p><p>So this reaction is equal to e1 where the mass now is weight of gun, scope, sling, etc divided by g.</p><p></p><p>Now that you have the physics, we can see that only things accelerating (F = ma) have an effect on recoil, not the case size.</p><p></p><p>By the way, keep your velocity down, these equations go out the window as velocity of bullet approaches speed of light, something that really worries some scientists!</p></blockquote><p></p>
[QUOTE="DMCI, post: 441416, member: 1730"] A very excellent question for a sophmore physics student. You have a good intuitive feel for the question, but like many average Americans, **** little science to back it up. Energy is for a moving body is defined as E = 1/2 M V^2. The up arrow for purpose here will mean to the power of. The equation therefore is 1/2 Mass times Velocity squared. Mass is actually Weight/g, where g is the earth gravitation constant in english units of about 32.2 f/sec^2. E1 is generated by firing bullet and powder out the barrel Ok. So bullet, powder leave the barrel at great speed. This generates a reaction equal and opposite which can be the recoil. E2 is the reaction of the gun and is equal to E1. (According to Newton's third law: The mutual forces of action and reaction between two bodies are equal, opposite and collinear.) So this reaction is equal to e1 where the mass now is weight of gun, scope, sling, etc divided by g. Now that you have the physics, we can see that only things accelerating (F = ma) have an effect on recoil, not the case size. By the way, keep your velocity down, these equations go out the window as velocity of bullet approaches speed of light, something that really worries some scientists! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Do cartridge case dimensions affect recoil?
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