1. SR-4756--For extra-hot .38 Special loads and for moderate to warm loads in .44 Special, .41 mag., .45 Colt and .357 mag. Also for top-end loads in .38 Super and 9x23.
2. Unique-Mid-range loads in many calibers.
3. WW296/H110- Full-power magnum loads.
The above three are just the ones I use in greatest volume. I also load a lot with WW231/HP38, Viht N320, 340 and 350, Herco, AA#5 and AA#7. AA#7 is about the only powder I load in 9x19, but I use Herco when I run out of #7. AA#5 used to be my favorite for .40 S&W, but I've mostly switched to N340 for .40. When Winchester still made 452AA, I loaded lots of it in .45 ACP.