CQB45ACP
Member
ThanksIf your brass is too short one of three things is making it fire.
- your barrel has a short chamber and it is headspacing off the case mouth.
- the case taper (diameter) is large enough that it is headspacing off the case wall instead of the case mouth or,
- the extractor is holding the case close enough for the firing pin to work.
Not really a problem as long as the ammo works and the firearm isn't being damaged but not the way it was initially designed to work.
Number two is new to me I must confess.