Starting new with an Omega, myself, knowing what i know, would use W209 primer, because they are the longest primer. The sabot of choice would be the crush rib, because the Omega have tight barrel. Bullet of choice would be the XTP for sight in. These bullet fly accurately, and are inexpensive compared the the Barnes. After you have shots through your rifle, and are some sighted in, then is the time to try the Barnes if that is your desire. Actually, the XTP works great killing deer. Another inexpensive option is the Deep Curl. After shooting many shots, one can always go with the Barnes, if one feels the need; they are good bullet, but so are the XTP, and the Deep Curl at 1/3 the cost. The main thing is to have fun!