So I built this rifle, I'll give specs in a minute. I had a little bit of trouble figuring it out. Still not there. Barrel did not like my powder selection I'm guessing. Also you can see in the photos that what I'm guessing is, nosler loaded these factory rounds a tad hot. Not sure if it was a bad batch or what. I've contacted them to see what they think could've happened. Unfortunately it blew shrapnel down my barrel and had some in my magazine. I bought a box of trophy grade ammo for a barrel break in before doing my ladder test. Specs RIFLE Tikka t3x action Xcaliber 1:7 6groove 26in #4 Factory stock Vx5hd Nightforce 20moa rail Warne rings LOAD 6.5-284 Col: 2.96 143eldx RL 19 Lapua brass Fed 210 Started at 48 gr and worked up by .5 all the way to 50gr. No pressure signs on any of sorts. Middle target is 48 gr. Bottom left 48.5 Top left 49 (shooter error, shot high off the bags) Bottom left 49.5 Top left 50 Thinking of going with a slower burning powder due to a 26in barrel. Maybe imr 4831 or Rl22 Let me know any suggestions or comments feel free.