......just acquired a 1901 Colt DA .38.......I know these are chambered for .38 long colt. I roughly measured my SAA, which is .38 spl/.357, the bore is .356. The Colt DA measures .367. Which by the book appears to be within spec. Now the question before I try or do something stupid. The .38 spl rounds I use in my SAA fit the shorter DA cylinder and do not protrude. No, I have no intention of shooting those. My question, can I shoot a .38spl case with a shorter bullet and a load of 2-2.5 gr of Trailboss? I do know a couple guys in our NCOWS group cut .38 spl brass down to long colt length. Just looking for input from those that have experience with these guns.