Was a direct quote from an American cast bullet forum and if you hit up Mr Google I am sure you will find it.It scared the shit out of me just reading it.This same site gives a lot of reload data for cast bullets and a common theme is x amount of any fast powder gives x velocity out of any similar case with any bullet.Another is you cannot fit enough blackpowder or trailboss in a case to overload a gun.
A disaster waiting in the wings and Murphy has a saying that springs to mind.
By the way I have enough blackpowder to see me out and enough trailboss to load about 500 50BMG's thus the search for loads.
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