May not be much help but I’ll relay my experience. I have a lot of the old surplus 4831. I have been shooting 140 nbt with 69 gr., 24” barrel, chronographed @3200 FPS for years. Recently loaded the 145 lrx with 68 gr. Pleased point of impact did not change. I shoot regularly400yds. 140 nbt load is 12” low400 and the 145lrx 9”@400 yds with same point of impact at 100 yds. Haven’t had time to chronograph the 145 lrx load but some type of good gremlins must be at work. I won’t believe anything but the facts when I chronograph the 145 load but point of impact can’t be ignored. It was less than moa at 400. My load work is done. I’m sure you will be pleased.