Bob Jones can answer more question about drillings than most dealer and I have never heard a complaint about a deal with him. If you are interested in finding a good drilling he could be very valuable to talk to. JMHO Pick his brain.

But the recomendation to stay away from rimless cartidges I comletly agree with. Metric rim cartidges will be easier to find and keep shooting but stay away froma few of the older fringe cartridges unless you like spending a lot of time working on brass, sizing brass, necking brass, reloading, ect... Factory brass is not to under valued in these old guns.