Once cartridge firing rifles and revolvers were used by the US army,reloading of fired cases became a standard thing for every fort the US army had. .45 Colt and .45-70 were reloaded with the powder that was used for the cannons.(one powder fit all.) This continued at least through the use of the Kragicon in .30-40 US. The only other reloaded ammo was for the .30-06 in the use of fired cases to make blanks out of and early on the gallery rounds used on indoor ranges with the powdered lead bullets. But once the US became a world power the use of reloaded ammo stopped except for artillery shells that were returned to the government armories and reloaded after the shell was inspected. There were and are several commercial companys that used USGI brass and reload these to spec. but these were only sold to the commercail market and not to the government. Many police departments have used this ammo for years. Black Hills is one and have been doing it for quite awhile now.