The ones I use the most are definitely AA2495 and IMR 7828 SSC. AA2495 covers all sorts of medium burn rate stuff, and is particularly excellent for straight wall lever gun cartridges with heavy bullets (producing top velocities in .45-70, .45-90 and .50-110). It also does well for light bullets in .375 H&H. 7828SSC is great for various small bore magnums and heavy .375 H&H
