A couple of weeks ago I screwed a new Criterian prefit Barrel (6BR, 8 twist, 28"bull) on an old Savage 112 single shot action/BVSS stock. After load development, with 150 rounds down the tube,,,that thing shoots like crazy. It consistantly will keep the group at 300 yards under 1 1/2 inches. Several groups have measured slightly over 3/4". I own a factory Savage model 12 benchrest which only likes RE15. This newly barreled one loves 30 gr. of Varget with berger 105VLDs .010" into the riflings. It does not like the new 105gr. hybrids. The new also barrel cleans up easily.