I think if I were looking to build a few Mausers for resale, the first thing I'd do is some research. Look at sites like gunbroker and auction arms, see what they're actually selling for. That will give you a price range to work in so you can make sure you don't end up with more money into a gun than you can sell it for. As far as calibers go, I would look at some of the newer calibers that are building popularity, like 7mm-08, 260 rem., or maybe 338-06. There's a couple metric calibers like 6.5x55 and 7x57 that are making a bit of a comeback as well. The problem I see with something like a .243, 30-06, or 308, is that there's so many of them for sale that it's hard for you to make yours stand out from the crowd. Just my $.02.
Dan
