Curl, have you gotten away from NfB loads altogether?
Coruous if you needed to swab between any of your shots using black and a full .458 bullet?

I have swaging dies to make paper patch .458 (patched dia.) of any weight I desire but have only used them in NfB loads and reduced nitro loads (much the same I guess)
I am going to send some 283grs to Steve Bertram to try in his Henry.
I dont recall why I ended up making that weight but iirc that is where the core mold was at when I bought it so swaged up a few.
Of course I can make them any weight and if 300-330 is where they shoot I should do that anyway.