Boomer, my load is in R-P cases, 180 Nosler Partition ("seconds" with a cannelure off Nosler's, Shooter's Pro Shop page), 64.0 grs of H4350, a Winchester LR Magnum primer. Base to ogive (B-O) length as measured by a Hornady tool is 4.018" (the max B-O for my rifle with that bullet is 4.046). This is not max in my rifle but I'd start a bit lower. Hope that helps.
