projectile retain roughly the same kinetic energy?
Absolutely not. The listed "maximum effective range" on most supersonic rounds is usually when it hits the sound barrier and the center of gravity(edit: center of pressure/drag) shifts while going through turbulence, this usually causes most bullets to tumble and lose energy very, very rapidly. If it is from mismatched rifling it could start tumbling immediately or quite far from the muzzle though.
(Notable exception is .45-70, and very early, discontinued before WWI, versions of .30-06)
Ripping the jacket off means you probably end up with multiple pieces.(or one incredibly jankey piece of lead dragging the jacket like a parachute). One or more lightweight jacket pieces of a very unaerodynamic shape and a probably one very soft lead piece that is lighter than normal.
What is the accuracy when your rifling is screwed up
If it is screwed up enough to cause the bullet to tumble or the jacket to rip off, the accuracy is terrible, like skipping off a pole, it requires Charlie to have been unlucky.
projectile retain roughly the same kinetic energy?
Absolutely not. The listed "maximum effective range" on most supersonic rounds is usually when it hits the sound barrier and the center of gravity(edit: center of pressure) shifts while going through turbulence, this usually causes most bullets to tumble and lose energy very, very rapidly. If it is from mismatched rifling it could start tumbling immediately or quite far from the muzzle though.
(Notable exception is .45-70, and very early, discontinued before WWI, versions of .30-06)
Ripping the jacket off means you probably end up with multiple pieces.(or one incredibly jankey piece of lead dragging the jacket like a parachute). One or more lightweight jacket pieces of a very unaerodynamic shape and a probably one very soft lead piece that is lighter than normal.
What is the accuracy when your rifling is screwed up
If it is screwed up enough to cause the bullet to tumble or the jacket to rip off, the accuracy is terrible, like skipping off a pole, it requires Charlie to have been unlucky.
projectile retain roughly the same kinetic energy?
Absolutely not. The listed "maximum effective range" on most supersonic rounds is usually when it hits the sound barrier and the center of gravity shifts while going through turbulence, this usually causes most bullets to tumble and lose energy very, very rapidly. If it is from mismatched rifling it could start tumbling immediately or quite far from the muzzle though.
(Notable exception is .45-70, and very early, discontinued before WWI, versions of .30-06)
Ripping the jacket off means you probably end up with multiple pieces.(or one incredibly jankey piece of lead dragging the jacket like a parachute). One or more lightweight jacket pieces of a very unaerodynamic shape and a probably one very soft lead piece that is lighter than normal.
What is the accuracy when your rifling is screwed up
If it is screwed up enough to cause the bullet to tumble or the jacket to rip off, the accuracy is terrible, like skipping off a pole, it requires Charlie to have been unlucky.