OK, so it's based on the 45acp case? I wasn't thinking it was a bottle neck cartridge. Cool! I have a Gen. 3 G20, with the 3.5lb trigger and adj. night sights, and have been wanting to try a 6 in. barrel for hunting reloads. A lot of firepower there. <img src="/ubbthreads/images/graemlins/cool.gif" alt="" />