64.0 grains of H4350 nosler ballistic tip or partition WW case and a Federal 215 mag primer and should shoot bring out full potential of rifle. I have loaded for both the 300 wsm' s I owned A bolt and Winchester and that load shot great out of both. Whoever said the 180 didn' t shoot well needs to have their head examined. Too much stupid hearsay over this line of cartridges.