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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throating a rifle barrel
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<blockquote data-quote="Rustystud" data-source="post: 596011" data-attributes="member: 9964"><p>First, I am not an engineer or physist. My theory would be your are dealing with a very long projectile. When the bearing surface is pushed beyond the neck shoulder juncture it allows for the burning gasses to push not just from the rear but from the sides. We all know primers when fired start a forward burning of the powder. we know that those enclsed expanding gasses are moving violently. This conclusion was highly studied by P.O. Ackley as well as the engineers at Picatinny arsenal and other laboratories. </p><p> </p><p>My theory would be some bullets may yawl as they break loose from the neck engaging into the rifling. Most people think bullets just abs up the bore in a spiral. If one looks at a barrel during firing unter time lapsed photograph and X ray one would see just how violently a bullet moves from side to side until it gets stablized several inches down the bore. </p><p> </p><p>I give the following example have you ever seen a bearing dropped into a funnel. as it goes toward the center it both speeds up and tightens up its spiral.</p><p> </p><p>Again I am not an engineeer and this is my theory based on many years of reading and shooting.</p><p> </p><p>You might broach this subject with Gene Beggs over on the Bench rest Central Web sight he is a wealth of (balistic) knowledge. Another good source might be Al over at Varmint Al's webbsite. He has many computer models of bullets leaving the case and moving down the barrel.</p><p> </p><p>Nat Lambeth</p></blockquote><p></p>
[QUOTE="Rustystud, post: 596011, member: 9964"] First, I am not an engineer or physist. My theory would be your are dealing with a very long projectile. When the bearing surface is pushed beyond the neck shoulder juncture it allows for the burning gasses to push not just from the rear but from the sides. We all know primers when fired start a forward burning of the powder. we know that those enclsed expanding gasses are moving violently. This conclusion was highly studied by P.O. Ackley as well as the engineers at Picatinny arsenal and other laboratories. My theory would be some bullets may yawl as they break loose from the neck engaging into the rifling. Most people think bullets just abs up the bore in a spiral. If one looks at a barrel during firing unter time lapsed photograph and X ray one would see just how violently a bullet moves from side to side until it gets stablized several inches down the bore. I give the following example have you ever seen a bearing dropped into a funnel. as it goes toward the center it both speeds up and tightens up its spiral. Again I am not an engineeer and this is my theory based on many years of reading and shooting. You might broach this subject with Gene Beggs over on the Bench rest Central Web sight he is a wealth of (balistic) knowledge. Another good source might be Al over at Varmint Al's webbsite. He has many computer models of bullets leaving the case and moving down the barrel. Nat Lambeth [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throating a rifle barrel
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