I agree with Stan & Keith. The only premium when it comes to a majority (ultra rare grades/models being the exception) is.....the ammunition. The ammunition can be painfully expensive for old 10s. If you roll your own, and you find a 10 bore with game gun weight and dynamics (they exist...I owned a light 10 bore T. Woodward spiral spring a few years ago), they can be pretty sweet guns. Most 10s will be fowling pieces, btw. If you look around you can find some great deals on old, extremely high quality 10s, and more than likely theyll be priced cheaper than the equivalent 12 bore.
