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Message: <blockquote data-quote="338Shooter" data-source="post: 1194018" data-attributes="member: 3449">by my calculations it is impossible for the target to swing over the frame with the chains taut by being shot with a 338LM at 3000 feet per second.  I estimate the plate weighs 12 pounds which is probably a little under weight and neglected the weight of and friction in the chains which would only make the scenario more difficult to happen.The momentum of the bullet is 14.81 Ns and the momentum of the target would need to be 21.046 Ns instantly after the impact was over to make the swing with taut chains.  This also doesn't take into account the particles of the bullet that are still moving with some velocity.  if you subtract the particles momentum from what is transferred to the plate you will fall even shorter.  If we assume that all momentum from the bullet is transferred to the plate it would have an initial velocity of 2.72 m/s.  Using this to calculate the energy to be 20.13 Joules and using m*g*h to calculate the max height it could achieve before it stopped (conservation of energy) it could only achieve 1.23 feet above its resting position.  This would only be about 3" above the frame in space and not enough to allow an over bar swing.  These calculations also neglected the mass of and friction in the chains.  QED: It will not swing over the bar by being shot with a 338 Lapua at point blank range.</blockquote>