Good report....I recently bought a box of 165 grain Gamechanger bullets in .308 dia. and worked up a few loads for my Kimber Subalpine and Sako A7 (both .300 WSM) the Subalpine shoots the 165 Gamechanger with 63.5 grains of H4350 into .50"-.75" 5 shot groups @100yds and just slightly larger .80"-.90" 5 shot groups with 64.0 and 64.5 grains of H4350. The A7 will shoot all those same loads under MOA......I also loaded the 165 Gamechanger bullets for My Kimber Subalpine 30-06 with 53.5, 54.0 and 54.5 grains of H4350 but I never got the same sub MOA groups I got out of My 300 WSM rifles.....I also weighed 10 Gamechanger bullets and found them to be the most consistant weight hunting bullets I have ever found, 7 out of the 10 bullets I weighed were exactly 165.0 grains and the other 3 weighed 165.1, 165.2 and 165.2 grains, as a comparison I weighed 10 Barnes 165 grain TTSX bullets and only 3 out of 10 Barnes weighed exactly 165.0 grains, the other seven varied in weight from 164.5 to 166.0 grains........My main concern with the new Sierra Gamechanger is its toughness........Hb