Coach Report post Posted June 30, 2010 I've heard the term that a rifle/action has been "blue printed". Christian's sweet new rifle is a good example. What does this mean? Share this post Link to post Share on other sites
HaYen Report post Posted June 30, 2010 I always thought of it was "truing" up the action. Making everything straight and flat. Below is a quote from a smith in NM that does a good job describing what he considers Blue Printing an action. Blue printing an action is a term use to mean, “to make exactly like the intentions of the blue print”. In a blue print you have reference points in the drawing that all of the drawing’s components refer to by being either parallel, perpendicular or angular to. In the case of a Remington 700 Action there is a center line. Every component of the rifle will reference to this center line. It serves as the center line of the bolt-way and the center line of the threads. It should also be the same center line of the bolt body and the firing pin hole. The receiver face and the lugs are to be exactly perpendicular to this center line as is the bolt face and recoil lugs on the bolt body. In order to produce an affordable action, tolerances must be compromised and the manufacturing process closely scrutinized to yield marketable product and yet maintain a certain amount of affordability. I believe Remington does a very good job of this by producing a wonderful out of the box rifle. Unfortunately these compromises do not produce perfect actions. In order to achieve extreme accuracy there can be no compromises, it is either perfect or it is wrong. When I blue print an action I make it as perfect as I can measure. All of my barrel work and action work is done in a independent 4 jaw chuck and indicated in till there is “0” run out. Share this post Link to post Share on other sites
Coach Report post Posted June 30, 2010 Ah - that makes sense. Thanks! Share this post Link to post Share on other sites
