Just put a duramaxx on my long acion with the centerfeed. Was really easy. All I did was put a cut business card between the feed lips and the bolt. Taped the mag to the action. Put devcon in the mag area, and set the action and magazine into it. Torqued the action screws and done. Cycles just fine. While I had it apart I also bedded the action....did not go as smooth as the first part, but it is only my second attempt at it. Have not had a chance to shoot it yet to see how it will do.

One word of advice though is do not use too much epoxy as it will go too far up the magazine and not let the feed lips flex when loading the magazine. I had to do a little dremel work on mine. Was a little too tuff pushing those bullets in there.