For what it's worth, I purchased my .270 Rem 700 in 1974, and I first used 130 gr. bullets using whatever was cheap, usually Hornady. It always shot terrific. I later tried and settled on 140 gr. hornady spbt and they shoot great. Best bullet I have used. I have never had a problem with any bullet I shot from 100gr. to 150 gr. I never grouped the 150's because I didn't like them due to recoil. (I was 14 when I purchased the rifle.) All the other bullets have shot 1 moa or less so I never have worried about working up a load. I always just loaded middle of the range or slightly hotter using 4831, with the bullet just off the lands. The gun just doesn't seem to miss and out shoots me.