Shawn Carlock can open up your magazine well,and sell you a longer mag.liner. Give him a call@ Defensive Edge 1-208-7732331. If you want a little more velocity, he can rechamber to 338 Edge. I sent him a Sendero 338 Ultra,And he bluprinted the action, Opened up magazine,new box liner, and rechambered to 338 Edge.Shawn does first class work,and is a hell of a nice guy.My Sendero shoots bugholes. Give him a call. Dave.