I am very happy with the +P in my 6.5 SAUM. I match the velocity I had in my 26" barrel with my current 22" barrel which was the goal (shorten it down for a suppressor and keep 3,000+ fps w/ 156 Bergers). I will gladly do it on any short barrel hunting specific rifle running heavy for caliber...
Probably smaller than you wanna go but I’d recommend a 6.5 SAUM. I run the Berger 156 Elite Hunter at 3030 fps in a short action. That’s 1275 ft lb at 1,000 yards. My personal min is 1500 ft lb for elk and 1200 for mule deer but lots of elk are killed with 1200 ft lb. For perspective factory 300...