ok so i bought a mosin 48 1/2 inch 91/30 so im hacking away at her.. im gonna be trimming and molding the stock so it flows into the barrel (still free floated) like the ati stock does.. whats a good rule of thumb of how far the barrel can stick out past the end of the stock? dont want it to turn out looking like the barrel is a mile long or vice versa that the stock goes on forever.