Yesterday I grabbed my 7 mm Mag for my second shoulder test. Prone at 300 yards, went as follows, first shot great, second shot a little pain, third shot, sharp pain on recoil. No damage and shoulder recovered without medication. It looks as though my 300 WM will set this season out. Its first time off since the fall of 1970. Group size was 2.85 and 12" low, which disturbed me because it was sighted in last year. I am not sure why. Another test will take place next week. I am still trying to reduce the group size using the 160 AB. Load was 71 gr. H-1000, RP cases and CCI mag primers.