I would personally get some 250 grain Shockwaves and some 240 grain Mag Express XTP's. For powder I would get some looseTriple Se7en 2f. Be sure and get a clear see through powder measure.

Load 100 grains of loose Triple Se7en 2f and a Shockwave. Be sure and swab the barrel between shots, and you should get some excellent accuracy out of the rifle. The 240 grain Thompson Center Mag Express XTP also shoot well. I base this on my Black Diamond XR and what it likes, also from reading the posts of other Omega shooters. You might later want to try some 200 grain Shockwaves. I think you will find that the rifle shoots a lot of projectiles very well.

Triple Se7en (poster) and others can advise you of time proven loads for the rifle, but if I had just purchased one, that's where I would start. Be sure and clean the barrel real good, and swab the bore clean of all oils before you load it the first time.

Congratulations on a great rifle. I think you will be very happy. Be sure and post your results for us...