I shot 150 gr psp rems for years. I shoot 30-06. I had trouble getting too much expansion. I tried the federal fusion 165 gr. I love them. they don't expand and come apart like the rems did. I don't blow the whole quarter of a deer apart if I hit them there. I like that. They are a bit more pricey butthey have been worth it to me.I'm not knocking the rems or endorsing the feds. It's just what I experienced shooting both.