Staball 6.5 with a Sierra 77TMK has been lights out in my 18"suppressed rig. I swapped to a H3 buffer that I added 150g of lead to and an adjustable gas block. Zero recoil. I've taken five whitetail from 270 to 480 yards with it since June.
The only notable issue I've had is swelling at the neck shoulder junction that is causing chambering issues. I tracked it down to happening during bullet seating and then also sometimes at crimping. Using a Lee FL die and a Lee FCD. I'm still noodling on solving that issue as it isn't happening every time in the same operation. I'll try a bit of lube on the bullet when I seat it to see if that takes care of it. I am necking down starline 6.5 Grendel brass so I can keep it segregated from my 6.5 Grendel brass. It's rapidly becoming my favorite gun since I've been struggling with recoil.
The only notable issue I've had is swelling at the neck shoulder junction that is causing chambering issues. I tracked it down to happening during bullet seating and then also sometimes at crimping. Using a Lee FL die and a Lee FCD. I'm still noodling on solving that issue as it isn't happening every time in the same operation. I'll try a bit of lube on the bullet when I seat it to see if that takes care of it. I am necking down starline 6.5 Grendel brass so I can keep it segregated from my 6.5 Grendel brass. It's rapidly becoming my favorite gun since I've been struggling with recoil.
