I like where this thread is going. Lots of great info from experienced 10mm/G20 shooters. What ive learned so far-
Im thinkin Longshot is the way to go, everyone seems to agree its a great powder for these velocities, and it was used to load Swampfox ammo. Sounds like a winner.
800X also does great, but each charge has to be weighed due to it being a poor shape for runnin thru a powder measure.
Blue Dot is the old standby, and Accurate #9 has some fans too.
Wow I got a lot of loads to work up!