Took my newest Rock to the range this morning and ran 150 rounds thru it. Various loads and bullet weights and powders. First few were scattered pretty good but after a small sight adjustment and changing ammo it started to come around. At the end of my session it was able to put a full 8 round clip inside a 3" bull at 7 yards. It seems to really like 200 gr Berry's hybrid HP with 6.0 gr of W231. It will only get better from here. Another 1000 round or so should about do it. 
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