I've got load data for Pyrodex Ctg if that's the way you want to go, although now you imply that you have data for Trailboss loads. My advice is therefore redundant.

Think you'll find that IF you ask for it a .45-120 cal rifle, the PTB will very quickly pick up that it is NOT a nitro firearm that you are asking for. Unhelpful though they might be on occasion, they are not complete dwongs.

However, that's a problem you might have to deal with in justifying it as a game shooter. Your pal with the .45-70 is fine simply because .45-70 is also a nitro cartridge. Your choice of calibre never was.

tac