I am new to the 6BR, anybody have any experience with 77 grain lapuas? Good load data/powder suggestions? Also have 80 gr Fowlers I have heard nothing but good about the Fowlers. Shooting them out of a 24 inch 1-10 twist lilja with .265 neck, lapua turned brass. Primarily for varmints & a little range work 100 -500yds. thanks D