First trip to the range with my newly build 243 and the CBI barrel. I used H4895, 87 grain V-Max and 90 grain Game Changers, 15 of each. All loads were mild as mainly just doing the recommended break in. I did shoot groups and with exception to a couple of groups, I had some serious fryers. I just kinda shrugged it off to a clean barrel and maybe cleaning solvent in the barrel. Second trip, I loaded 20 rounds. This time using 80 grain Bergers, Fed 210M primers and H414. Starting at 42 grains, 43,44,45. All these loads shot exceptionally well and showed no pressure signs until I reached the 45 grain loads. 4 for the 5 showed no pressure but the 5th shot had a mild primer swipe and the bolt was just a tad harder to lift that the 4 previous rounds. The temp was in the low 90's and cooling the barrel was getting tough even though I was letting the rifle set quite a while before each different load tested. I know the H414 can be a little temperature sensitive so is this what I was seeing? I usually don't use H414 in the 243 but thought I might try it. I liked the groups but don't want to fight pressure. Maybe a change in powder? Or maybe a different seating depth? I had the Bergers kissing the lands.