If one believes in the study of demographics and how it will apply to the upper midwest, there are going to be huge losers in the land game in the coming decades. That old saw about "them not making anymore lakeshore" has busted, bad, up here. Whatever your land or homestead assets were worth in the 5 state area, in 2005, simply divide in half, and that is what it is worth today. Premium properties have been hit even harder. It isn't going to change for the better, either, as baby boomers flee, in the near future.
I don't know anyone under 40 who is into doubles. Period. I have a retirement aged friend that asked for help in finding a mid-quality boxlock 20 gauge, and quickly ruled it out after seeing the money it would take. I am coming to believe that isn't unusual. Most guys or gals younger than 40 don't see the charm in a double. Not any that I know.
You want an investment, go buy one, and keep it for that. But, be careful-anyone who bought a Crysler product with the hemi engine from the musclecar era, 6 years, or so, ago, can ruefully tell you what the worst investment of the new millinium is. Most of us have won on a few guns, and, lost on some others, but, I'm betting it's all going to change with a bleaker shooting future for the fewer people interested in this type of recreation. Less ain't more in this game, fellas.
My IRA is up 10% since December 31 of last year. I don't have any guns that have done that, not yet, anyway. Probably won't stay that way, though.

Best,
Ted