Hotsoup, my son's 24" 700 SS using 150 PTs over 52/4350 (any higher too hot) chrono'd 2850. Not fast, but enough.

Hit a Mulie at 250-275 in the neck facing me, it did all but exit the azz end. It parachuted open, then closed the jacket as the base turned fwd as it followed the curvature around the ham vs. exiting straight line.

I s'pose a 110 Barnes would have drilled clean thru smile

For me, I have zero problems taking a 277 loaded w/140 ABs, 150 BTs, 150 PTs, or any accurate Barnes after elk. Oh, last - the 160 PT, I'd just as soon run that than 180 CL out of an 06 myself.

Several noted authors raved on the 140 Fail Safe by WW, no longer mfg, and how they flatten elk. Craig Boddington and others did fine w/them, though I hear that bullet 'fails to open' at long ranges.

The problem I have is how so many report the 270/130 kill so many elk, yet a 260 or 708 w/similar bc/sd like constructed bullets are just impotent smile

I'd expect a 150 Premium load to run 2800 to no more than 2900 out of a 24" bbl. 2950 is doable w/good handloads. 4831 is no doubt better than 4350 for speed and would be the next used for 150s, or another powder of similar rate.