Thread: .452 bore vs .455 cast projectiles

I size lead 500 grains to .452 for both my 45/70s, being lead, the boot up the bum on take off will bump them up to fit the barrel dia, you can get some stripping by the rifling on the trip down the barrel, a harder lead compound will help stop this. Have a shitload of shot I’m melting down for projectiles, so should go well