History of this cartridge: The 38 A.M.U. (Army Marksmanship Unit) is a 38 Special (Rimmed)

Cartridge, made Rimless! or in other words a Rimless 38 Special Cartridge, introduced for the

1964 Army National Match, used in special 1911 pistols made by Colt with Drake Slides.

We are not sure how many manufacturers produced this cartridge, but to the best of our

knowledge, it is no longer offered by any maker, making it an "Obsolete Pistol Cartridge ".

