Hey guys wanted see if you can help me out. I have McMillan stock that I got a couple years ago. Had the stock milled for a Stiller s/a diamondback drop port. The drop port, trigger, & trigger guard were not milled in the stock just the action foot print & barrel channel. Now my question. Thinking about getting a Bat action to finish the build. Which model Bat would have the closest foot print to the diamondback. Rifle to be for f class in 6br. Interested in one of the Bats with the roller cam on bolt. Not against using another brand of action if it saves my smith some milling & glass work. Thanks for any advice advance.