Working up loads for my 257 Wby I started getting cratered primers and slight ejector marks. Ejector marks were on all loads starting at 67gr but more visible on the 70-71gr. This was 110gr Nosler Accubonds with 70 & 71gr IMR 7828. Nosler lists 71gr as max with the 110gr accubonds. There was no other signs of pressure and I got .83" groups with Nosler listed C.O.A.L. so I like the load just want to play with OAL to see if group will tighten up. What do y'all think?