You’ve missed the whole point of the thread. And also if you don’t think an animal is not likely to notice 25% increase in energy at 600 yards….. Why the 6.5PRC or any of the 7’s or 30’s. Energy matters unless you’re ringing steel or paper punching.
54.5 imr4350 or 58.2 RL22 with 130s has worked well in a lot of rifles. 56.4 with 140s is another proven load for me. In fact I think that’s sierras recommended hunting load from their manual.
My numbers? straight from the Berger Ballistic calculator and the load I'm using(yes Chrono graphed), from a manual ,not some hypothetical or over pressured, 58.3 grains RL22. Manual show 3045 fPS. i'm actually getting an average 3070. Not sure what you used for velocity Strelok. Creedmoor was...
My opinion is no and here is why. the 280 was never a popular round. should have been but never was. Remington changed its name(7MM Express) and back to the 280 to try to light a fire under it. even the great 264 win mag couldn't budge it. today's hyper popular 6.5's are displacing some of the...