I shot a box of it over the chrono. Target results at 500yd were acceptable, about 3/4MOA and for factory ammo with a cannelured hunting bullet I was happy with it. I still shoot whitetails with the 140 Amax though. The 120 GMX factory ammo was pretty hot, from the 22.5" barrel I shoot the bullets were passing the chrono avg 3075fps roughly, IMO that's pretty darn quick and I noted that the primers were somewhat flattened, definitely flatter than my known-to-be-warm 140Amax handload. From the 20rds fired I didn't notice any undue fouling or negative behavior. Later the same day my buddies and I were shooting milk jugs full of water at 1040yd with the Amax's.
The deer that I've shot with the Amax's have not gone more than a few steps, if any at all. I have absolutely no reservations using the Amax for a whitetail bullet. I shoot so many thousands through the year that I'm far more confident punching vitals with my usual match load than by using some factory hunting ammo that I"m not anywhere near as familiar with.