kbeaner, before you quit seaching try 56.5gr and 57.5gr IMR 4350 with 180gr Core Lokt bullet. The heavier the loadgot with the Core Loktsthe worse mine seem to shoot. Also try IMR 4350 60.5 gr with the 180 gr Nosler Partition or H414 60.5 gr with the Nosler 180 gr partition.