You can also shoot a relatively new cartridge, the.45 Cowboy Special. It's about the size of a 45 ACP, but is designed for cowboy shooting. It's not cheap ammo (nothing is), but it's cheaper than 45 LC or 45 Schofield. The .45 Cowboy Special is a .45 Long Colt case shortened to .45 ACP length to let cowboy action shooters load ammo with small charges of fast-burning powder, which is not safe to use in the large .45 Colt cases.