Manson Reamers Carbide Bolt Face Squaring Burr .378" 223 Bolt Face

The Manson Reamers Carbide Bolt Face Squaring Burr is designed to be used with the Tooling Block (sold seaprately). To use these burrs, place a stripped, trued and lapped receiver in an Action Wrench and hold the Wrench in the Bench Vise with the receiver horizontal. Screw the Tooling Block into the receiver threads and tighten it snugly- don't overdo it- against the front receiver ring with a suitable wrench. Strip the bolt completely except for the extractor. Apply Dykem or machinist lay-out fluid to the face of the bolt. Allow it to dry, then put a small amount of cutting oil on the bolt face. Fit the Face Burr under the extractor as you would a cartridge- the extractor should hold the Burr in place. Carefully slide the bolt, with the Burr under the extractor, into the action. The shank of the Burr must go through the bushing in the Tooling Block and the bolt must go into battery position with its handle fully down.At this point, the bolt lugs must be held securely against the re...