ACTION BLUEPRINTING

      Truing an action has become a very loose term in the gunsmithing industry. Just because metal has been removed doesn't mean that all is better. The photo below shows what I have found to be true. You must hold the action on the lathes spinning axis and at all points along that axis. The action once dialed in to this predetermined alignment must not be moved until all machining is completed. With all machining then executed by the single point method, only then can you have trued and action. Any deviation from this will result in askew surfaces and will set up multi axis relationships to each other.

     Below you can see the blueprint jig I manufacture and use on every action that is accurized by me. I don't do partial truing, it's all or not. With this jig, once the action is dialed in using two indicators not one, all machining will be single point cut. This style of machining produces parallel and equidistant surfaces to the center of the bolt bore raceway. Not just at one point, but along it entire length.

     The threads are machined first, followed by the action lugs leaving the receiver face for the last machined surface on the action. In the video I produce that shows all the setups and machining to true an action by this method, it also shows the action and bolt being measured. With a .00000 digital depth mic from the receiver face to the bolt face, then across the bolt face, it measures to within .00005 of true. That's 50/millionths.

     Customers that stop in just after their action has been accurized and not yet assembled are allowed to measure what I have done. Smiles abound and wonder turns into belief.