well forget the imr4831 for the 200 grainer. funny, same rifle, same powder, different bullets. the 180 noslerBTslove 4831 but not the 200 grain accubonds. the loads i mentioned earlier shot horribly. at least as far as my rifle shoots them. the rl-19 performs much better with the 200 gr. bullets. I don't know why i was screwing with the 180s vs the 200s anyway. looking through my loading/shooting log, and averaging up the 16 groups i shot with them - the 200s average comes out to 3/4". just passing time i guess.