finally got the 77/17 to shoot,floated the barrel (relieved the stock pressure) tried the action shims and didn't need it,tried 20 and 25 grain a max they sucked,wood chuck dens were ok need a little work on load ,but what shot lights out are the 25 gr hornaday varmiter hollow pts with 12.6 grains of H335 1/4 inch group at 50yds compared to 1.5 with the Amax,now to tweak the powder and seating depth