I'm in the process of putting together a 280ai. Trying to figure out what to do as far as bottom metal. I'd like to just go dbm with a m5 or surgeon but I've heard that there can be issues running the 300 wm mags. I know the feed lips can be bent with the brownells tool, but I've read mixed results ( feeding issues, vertical mag play and rattling...etc). I'm not married to the dbm idea. I'd be willing to go bdl type as this will be a hunting rig primarily. Would that be a better set up with the 40 degree shoulder? Any imput would be appreciated thanks.