IMO, I would still skim bed if my stock came with aluminum blocks. I also slightly enlarge the action screw holes to ensure no contact w/ the action screws. If your stock doesnt have any alum blocks, I would put pillars in and bed the action. This said, I have a 308 that I skim bedded that shoots 3/8 grps and put it into a chassis stock that I bought here in LRH. POI changed but the group is still the same. Getting ready to try a chassis stock on a factory 6.5 creed varmint that shoots 1moa, to see if it improves enough I don't have to bed. If it works out I may start getting chassis stocks to save tim, due to the amount of tinkering I do. WRT weigh...I like a little weight to keep down on recoil and balance. Personal preference.