I haven't shot the first 75 eld into meat but I've shot a lot of stuff from groundhogs to bear with 75 amaxs launched from 2800 to 3350 and have never had one not at least penetrate to the far side of the rib cage on deer and the like. That's not just rib shots but through shoulder blades too. Admittedly I try to miss the big shoulder bone.
Same for the HPBTs. From 223 to 22-250 I’ve seen the same as what you stated about the AMax.
