I'm going to be working on a 300 gr Nosler Partition load using .458 45/70 bullets for my Omega. I'm more concerned with minute of moose accuracy with sufficient power out to 200 yds. 6-8 inch groups at 200 would be good to go. Of course I'd prefer under 6". I'll start at 110 gr 2f T7 and see how they shoot. I may bump it to 120 gr if all goes well. I know 110 gr w/ 300 .451 Noslers shoot very well.