Do not forget that Chris changed the barrel on his 909 and can use a harder lead in it than the original 909 barrel . The Korean rifles have a shallow grove 1 in 20 twist rate barrel .Not sure what Chris has but I know he has stated before that he has changed the barrel . Marvin
Lee is making an interesting mold for the Ruger old army BP pistol, #90387, it's 220 grains, .456 and quite short with narrow driving bands. It's a bit heavy for my gun but with mods to up the power it may work well.