Cutting a mag well opening in a PTA

This came up while I was talking to somebody and I hadn't really thought of it before. I love my RBLP action and the idea of making it a repeater came up while talking to a buddy who shoots PRS matches. I'm not about to throw my action in a milling machine to try it, but he's thinking about it. I thought Savage made a DMB target action for a while, but it used a different bolt spacing. Since there are a lot of 4.4" target actions floating around it would allow the use of standard stocks.

The more I thought about it, the more I liked the idea of a RBLP repeater.