I know of mcmillan single shot and repeater models.... and the big BAT Machine action... is there any other custom action manufacturers that make good actions for a 50? Any other choices out there?
I do believe Defiance machine offers/offered a .50 BMG action. I'm not fully aware if it's still available to order. Here's a link to what it looks like: http://accurateshooter.net/Blog/defiance01.jpg