At the time of the adoption of the 45-70 the arsenals weren't concerned with reloading at all. There were numerous commercial cases made for the 50-70 for reloading. many officers prefered to keep there TD 50-70s or had Rolling Blocks (Custer being one) because they could still get government issue ammo but could also reload for hunting. The 45-70 was originally loaded by the arsenals with Benet inside priming through the late '70s.Shorty said:Also, one reason that the .45/70 was developed is because the .50/70, then standard, had an internal primer and could not be reloaded. The gov't wanted to save money by having a reloadable cartridge.