338 thanks for info ill start by calling defiance.My 260 action is custom made to allow this. It's called a "seeking cut mag well" at defiance machine. Not sure if thats just what they call it, or if that term is interchangeable.
10:4Seekins cut if youre searching for info.
dusty is there a link or specific article .Before i ask gunsmith i like to do some home work .10:4