I have an Omega, and like it, but it has been a real adventure trying to get an accurate conical. Short version: my brother and I both bought identical 50 caliber stainless Omegas. His is not picky and will shoot almost any conical accurately. Mine took 3 years and many powders and bullets to find the right fit. I get decent groups with 777 and 348 and 405 powerbelts if I don't push them too hard (90-95 grains of loose 777). However, had to go back to pyrodex to get better accuracy. APP and Blackmag3 both were terrible out of my gun with conicals.

Most accurate in my gun: 110 grains of pyrodex and 338 grain platinum powerbelts.