It's fun to play,
V-133,H-322,8208---221Fireball,222,222AI,22ppc,22Walldog,22br,6ppc,6br,6brtalldog
V-133--223AI
V-135--30IHMSA
8208--6x47
Scott-3032--30x44,30x47,7.62x39
IMR-3031--6x250,6Rem,243
IMR-4064--22-250AI
IMR-7828--300Wby,300RUM
IMR-4320--17Rem
H-4895--222mag,6remAI
H-4831--6x284,300mag,30-338mag
H-335--17machIV,223
H-4350--7x57
R-19--300wsm,284,280AI
R-22--6.5x284,270
My list changes every year it seems. I started using R-19/22 afew year ago and so far seems to produce good groups and velocity so may switch some more calibers over to that powder. I've tried Varget in afew rifles but for some reason I just don't get along with it. Been shooting H-4350ext and may change some rifles over to that powder also. You can wear a barrel out testing all the powders and I'm sure there may be better powders out there. Well good luck