But, unless that bolt and barrel extention are made out of pixie dust sintered in Superman's fist, it's insane to run .308 pressures and that's what it takes to get the advertised velocity.
Definitely a topic that was discussed in the 358YETI thread. The developer used pressure gauges and got objective data and lots of field data, but I admit have no idea what the bolt is made from. Based on the folks using it, the fact that folks are still buying these kits, and those actually posting results on actual hunting scenarios, the "magic" bolt is holding up. But maybe barely
I am not after a max load, and I have to continue adjusting the gas port, check accuracy at longer distances, etc.. Since I am aware of these "high pressures", I plan on continuing "slow" with reloads for this AR15 rifle.