I found what is was after last night when I had a chance to actually dig. im going from a 270 to a 300wm so doubt my mag will work as you speak of and from what I've read they don't work on a center feed except for the one from SSS unless I missed one. I can JB weld it in and then down the road if I want to do something different a little love from a hammer it'll pop out. Later,

kirk