I have a stainless Omega and by now most know I am not fond of the Tripple Seven powder in any form. My rifle seems to be particularly sensitive to the crud ring that 777 can form. I have tried all the "fixes" and at best I can get only one shot with a couple of spit patches and a dry patch between shots and the crud ring is still there somewhat. I don't know what your availability of other powder is but here is my preference in order of best to worst. Black Mag'3, American Pioneer fffg, Goex Pinnacle fffg, Pyrodex (dirty but easy to swab out and good accuracy), Real Goex fffg Black Powder, and finally Tripple Seven fffg. Pellets are not of interest to me. You may be one of the lucky ones that can shoot Tripple Seven and if so congradulations. If you find the crud ring too much to deal with then try one of the ascorbic acid based powders (which is what the first three I listed are). I would also recommend staying with heavier bullets. The Omega will shoot the lighter ones sometimes but the best accuracy and consistency I have found to be with 300gr. or heavier bullets.