I don't think there is any doubt, the most accurate is the .32 S&W long, used in the Olympics for years, this is probably the most accurate centrefire handgun cartridge going. Followed a close second by the .38 special which is just ahead of the .45LC & .45acp(joint third)
Things change when you start talking most effective defensive pistols, then you go for the 45's, one stop shots!
Things change when you start talking most effective defensive pistols, then you go for the 45's, one stop shots!