just watched your video. when i first saw your 25.1gn group i thought there was parallax issues. after watching your video i think there is some pilot error getting in there as well.

not picking holes or anything else, just a couple of thoughts. your head is bobbing about a lot, almost as if your trying to get a good cheek weld on the stock. also seams there is some snatching at the trigger.

try shooting the group without taking your cheek weld off the stock, even when reloading.

a 223 with a good barrel is not over fussy so should be giving better results. i shoot 40sbk. 40vmax and 52amax. all have a massive node of 1.5gn, with the n135 and i have to seat them according to the bullet length and not COL.


as said, not picking, just commenting