On Sat, 16 Jan 2010 16:12:40 -0500, John H
wrote:

We need a 12 gauge flare gun that will fire 12 gauge 00 Buckshot -
more than once.

If you fire a live shotgun round in a flare pistol you will likely be
picking it out of your teeth and other inconvenient places. Tests
have shown that they are not even up to firing a .410 shell with a
steel reducing sleeve in the barrel.