I am shooting a 26” 1:10 twist 300 Win Mag. I am finding that with the Nosler 200 Partition and the Sierra 220 Matchking that I am getting best accuracy with loads that are difficult to extract. Bolt lift does not seem overly difficult. Primer pockets are holding new primers just fine. No ejector blade marks are evident on the case. But I guess that the loads are too hot. I have tried RL25 and H1000. I have never tried Ramshot Magnum (used to be called BigBoy). Would this be a good alternative? Perhaps RL22 or H4831 would be good to try also but I figured slower powders would be better with these heavier bullets. Any thoughts? Thanks, Rufous.