The Firing Line Forums - View Single Post - Better 1911 Option: 9mm to .38Super or .38Super to 9mm?

RickB · December 4, 2021, 11:08 AM

It might be too much to ask a .40/10 breechface to accommodate 9mm, but a buddy has such a gun, and it seems to work.
A 9mm-specific breechface would not work with Super.
I think I'd want a breechface no larger than .38 Super dimensions, for a convertible Super/9mm.
You could load .38 Super Comp brass, use a 9mm breechface, and probably not have to worry about extractor swapping.

December 4, 2021, 11:08 AM	#10
RickB Senior Member Join Date: March 1, 2000 Location: Boise, ID Posts: 8,328	It might be too much to ask a .40/10 breechface to accommodate 9mm, but a buddy has such a gun, and it seems to work. A 9mm-specific breechface would not work with Super. I think I'd want a breechface no larger than .38 Super dimensions, for a convertible Super/9mm. You could load .38 Super Comp brass, use a 9mm breechface, and probably not have to worry about extractor swapping. __________________ Runs off at the mouth about anything 1911 related on this site and half the time is flat out wrong.