Brand
PROOF RESEARCH STEEL BOLT BLANK .224 CAL
When PROOF joined with Lawrence Barrels in 2012 they acquired 15 years of experience in manufacturing precision steel rifle barrels. PROOF make stainless steel barrels in-house with an absolute commitment to extreme accuracy and quality. PROOF start with double stress-relieved 416R stainless steel, a pre-hardened chromium stainless steel ideally suited for use in precision, match-grade rifle barrels. 416R was specifically designed by engineers in collaboration with barrel makers and rifle manufacturers to provide the consistency, high quality and durability the firearms industry demands.
416R is their stainless steel of choice because it has the following characteristics:
PROOF 416R arrives at the factory in long lengths and is then cut to finished barrel length. The barrels are then drilled, contoured and reamed to the bore diameter of the cartridge for which they are to be chambered. The barrels are then rifled and lapped and inspected with a bore scope.