So I’ve heard black powder is better at bumping up bullets to grove diameter then smoakless powder is.. my question is would BP bump a .308 jacketed bullet into a .303 bore if it was a open base heavy bullet. I am thinking about messing with 303 BP and would like to use 200gr bullets and I can not find jacketed 200gr 303 bullets
The reason I’m thinking on using jacketed bullets is from watching others do this I suspect it makes the pressure go higher and thus burn cleaner.