Thread: 90 gr Sierra Game Changer in 243 Win

I have shot about inch groups with the Sst bullets so nothing super flash but ok for hunting. Next time I take it out I will fire it a slow rate and take a couple of other rifles to try out while I wait for the barrel to cool between shots. This should eliminate the hot barrel theory. I loaded up another 5 rounds today and seated them at 69 mm to see if this helps . I have split the difference with the powder charge and loaded 42.5 grs oft AR 2209. The last lot were seated at 70 mm.