Originally Posted by
AlaskaMike
I may be wrong, but I seem to recall a range of .45 Colt Blackhawks that had large chamber dimensions. I'm not talking about chamber mouth dimensions, but the actual chamber dimensions being a bit on the loose side. I could certainly be wrong here and I can't remember any specifics, so take this with a big grain of salt.
My point is that is that you may want to measure your chamber dimensions. Excessively large chambers will allow the brass to stretch out to seal the chamber more than they'd otherwise need to, and that brass would have significantly reduced life.
Just a thought.