280AI at 2900+25" barrel = MAX pressure =brass eater!!!!
28 nosler would be good I think. If I could get brass
Also there is an accuracy at 2900-2920, 2980-3000, 3040-3060 and one at 3150 i have found this out by shooting 20,000 rounds in f-class comp. I JUST WANT TO BE AT THE 2980-3000 FPS...