That a heck of alot of speed in a 26" A buddy is getting cratered primers in his AI(a common issue due to the big pin hole) @ 2645ishI am getting 2820 fps with the 147 in a 6.5x47 lapua. It is 26 inch barrel. They are coated hbn and using h4350.
Ahhhh your suppressor has to be good for 80 or so fps. And some pretty awesome shooting as well!!The bullets are coated with hbn. It is a factory desert tech rifle. It is suppressed too. I am running 450 cci.
How much 4831sc are you running for that velocity. I've been interested in testing that combinationI'm running the 147s in my Creedmoor with H4831SC at 2820 FPS. It's the best bullet I've ever run in my Creed and it'll take a helluva good 156 grain bullet from Berger to get me to switch back from the Hornady.
I'm running a 25.5" Brux barrel with a 1-8" twist.