I had the same question...since the .45 ACP headspaces on the case mouth how can a .45 ACP be safely fired in a Roland chamber. This would be like trying to shoot a 9mm in a 9x23 Winchester chamber.
Anyone here shoot a .45 Super? Same size case as the ACP but thicker brass.
Bob
I shoot 45 Super and absolutely love it. A 185 at 1300. FPS + a 230 at 1100 FPS + and a 255 hard cast at 1075 to 1090 FPS. I shoot 45 ACP, 45 acp +P and 45 Super without a hitch and changes to my 1911 from one to the other.
I find that the 45 Super is a significant step up from a +P 45 ACP.
