Recently acquired a Cimarron "Presidio" .50-95, the version with the short magazine & 20" barrel. Had a couple boxes of 350 grain Jamison factory loaded ammo stuck away, shot some of it off the bench & found the combination to be surprisingly accurate. Intrigued by the accuracy, I disassembled one of the factory rounds & found it to be loaded with what appears to be Trail Boss, 18 grains. The bullet seems to be closely similar to the RCBS 350 .512 cowboy mould, luckily one of those is already on the shelf. To the question, have any of you loaded a similar load, or some variation of it with Trail Boss? Also looking for information on loading the same cartridge with 5744, have seen data with the 350 gr bullet & 5744 anywhere from 26-38 grains. Any information, anecdotal or otherwise, would be appreciated.
