Not a Remington, but I had a Savage 10FPE (the tactical with Choate stock) in .308 that would shoot 180 gr Core-Lokt better than any factory match or hunting load, regardless of weight, I put through it (Federal, Remington, Black Hills, Winchester, S&B, PMC Bronze). I have a 100 yard 5 shot group that looks like a baby clover with them. IIRC CTC measurement was about 5/8". Have you shot that purdy thing yet?