Sierra manual list 8 loads at 2,800 FPS and 1 at 2,900 in .280 rem . with 140 grain bullets . It list 5 loads at 3,050 and 3 at 3,100 for the AI . It also list 12 loads in 7MM mag at 3,200 FPS as max loads .
I have a .280 rem and its fine , I like it , don't want to change it . I also have a...