Its .45 ACP pistol cartridge was discharged from an unrifled barrel, thus greatly reducing its intrinsic and practical accuracy alike and being intended for short-range use—ideally, one to four ...

F or those of you who aren’t familiar with the legendary M1911 single-action semiautomatic pistol and its .45 ACP (Automatic Colt Pistol) cartridge, it became the U.S. Armed Forces’ standard ...