IMR-3031 (57.5 gr) gave me 2,840 with the 200 gr TTSX in a 22" bbl. It's a few grains over book max. Tried TAC, but couldn't get close to book speeds even after working up several grains higher. Varget, RL15 and CFE223 are too slow in burning rate for the 200 gr bullets, IMO - these are best for 250 grainers.