My 280 load with 140 Nosler Ballistic tips was 58.6 of Reloader 19. The book showed a max of 57 grains, but I could not get the velocity and was showing no pressure so I kept moving up .5, and the 58.6 performed to my liking. I have a Rem 700 Stainless synthetic, and there is very little lead. Then I ran out of 140's, so now use 160's. Nosler shows ReL 19 as the most accurate for 140's.