Finding COL in 9mm & 45acp types that headspace on case mouth.
29-2 after barrel setback.
Powder Check for Reduced Loads/Light Charges. Example- 26 grs in 6.5 Creedmoor.
Bullet base to ogive measurement.
Finding COL in 9mm & 45acp types that headspace on case mouth.
.243" bullets
Misfires Savage Axis 223, if yours has a problem.
Misfires Savage Axis 6.5 CM, if your rifle has a problem.
243winxb

Finding COL in 9mm & 45acp types that headspace on case mouth.

Fully Chambered. The FL sized empty brass and a loaded round should measure the same from muzzle to case head.

This tells me if the bullets diameter is to large for the barrel throat. Had a 9mm throat measuring .3568" it would not chamber correctly with a .357" bullet. Bullets needed sized to .3562
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