Have you considered having a single-shot forum? I've been getting interested in single-shots lately. There are all sorts of areas that differentiate single-shots:
<UL TYPE=SQUARE>
<LI>single-shot handguns can have very long barrels without being too heavy
<LI>single-shot carbines/rifles can have any kind of stock - collapsible, thumb-hole, pistol-grip - even under the latest California restrictions
<LI>Thompson/Center Contenders and Encores can be converted from pistol to rifle, but there are legal issues that the owner should understand before-hand
<LI>single-shots are the absolute easiest for wild-cat cartridge development
</UL>
<UL TYPE=SQUARE>
<LI>single-shot handguns can have very long barrels without being too heavy
<LI>single-shot carbines/rifles can have any kind of stock - collapsible, thumb-hole, pistol-grip - even under the latest California restrictions
<LI>Thompson/Center Contenders and Encores can be converted from pistol to rifle, but there are legal issues that the owner should understand before-hand
<LI>single-shots are the absolute easiest for wild-cat cartridge development
</UL>