Those Mysterious Forty-fives

[sheepherder]

Originally Posted by John Sabato

If an SAAMI specification .45 ACP loaded round is inserted into a 1906 specification dimensioned chamber will it drop into the chamber with excessive headspace from the base to the breechface?

or will it likely stop based on case taper close enough for the breech to allow the extractor to work? and close enough for the firing pin to enable cartridge ignition?

IMO if the firing pin is long enough to reach the cartridge wherever it is, it will fire...Recoil will fit it to the breech face & extractor...(Yes, I'm contradicting my earlier comment)...

My Colt 38 Super has something like .036" headspace, but the firing pin is long enough [protrudes through the breech face] to reach & fire the cartridges...With no noticeable ill effect or excessive recoil...