I made it back to the range yesterday to ladder test the 168 gr LRX and US869. The top of the ladder (93.0 grains) ran 3,310 fps (4,087 ft lbs). There was a little bit if sticky bolt on the last round but the primers (Fed 215s) never showed anything. Don't understand that since they get flat in most of my other rifles when running up around 65,000 psi. I did pop the primers out and the pocket on that last shot was looser than those running 3,280 fps or under so the that seems to be the limit if you want some brass life. Group size was 1 to 1.5 MOA. I'll be testing seating depths on the next go around. Should be able to get to 0.75 MOA based on what I've seen so far.