Looks like the velocity figures may be a bit low for RB, but- given the regulation, I wouldn't change that! You may try the wonder wads with lube, or maybe soak the 1/2" wads in a BP lube for cleaner bores. Personally, I have not had too much luck with BP due to fouling, and use Unique nitro for black in all my 12 bores, whether rifle or paradox. Looks like you are on the right path, and congratulations!! Oh yeah, BTW, chrongraphing the bore guns is hard on the Chrony!!
Doug