Well, I may have finally found the "magic bullet" for my Omega. Went out for a couple of hours yesterday. Decided to go back to Pyrodex and see what would happen. Tried 370 grain maxiballs: 3" group at 25 yards was the best I could do. Buffalo bullets were even worse. Then I tried the new 338 platinum powerbelts with 100, 110 and 120 grains of pyrodex.With 120 grains of pyrodex, I shot 9 bullets at 100 yards. With a peep sight, 7 of the nine were within a 5 inch group.2 fliers made the group 6-1/2 inches. Going to go back out and try that combo several more times, but since my personal max is 100 yards, I think I have finally found a combination that I can have confidence in. At least in the2 Omegas I have tried the new platinum powerbelts in, they have been accurate. Just hope they live up to their billing in terminal performance.