Originally Posted by
mdi
FWIW; the neck tension on a semi-automround is not from a crimp, but from correct case sizing. I reload for 4 semi-auto cartridges and do not "crimp" any. I also do not try to measure force in lbs. to check neck tension/pushback (never heard of the "50 lbs." spec.) nor do I measure case mouths after "deflaring", I plunk test. I started reloading 45 ACP in '88, 9mm in 2000. I thought I needed a cartridge gauge when I started reloading the 45, but I had way more trouble trying to make the rounds fit the gauge. Learned about the punk test and my gauge is in a drawer somewhere in my shop. For my 3, 45 ACP guns I size with my Lee die, use minimal flare (for both j-bulllets and cast), and deflare just enough to pass the plunk test on the tightest chamber. I can push the bullet nose against the bench with "some" force (lbs pressure??) and I get 100% good feeding and no set back...