Doug Dotson wrote:
I carry the Olin 25mm kit. .. The 25mm gun will also accept the 16ga
shotgun shell adapter..

OUCH! Back when American peasants were allowed weapons a friend had a
single shot 12 Ga sawed-off at the pistol grip and fore end. Despite
retaining about half its original weight it was quite punishing to
shoot. I'm not sure which end of a light plastic Olin I'd rather be on
when firing a 16Ga, and this from a nut who's carry gun is a LW 44
Magnum.

Anybody know offhand what "gauge" 25mm equates to?

No, but 25mm is about an inch. 12 gauge is about 3/4". Of course,
the kick will be largely dependant upon the powder charge. I have
25mm flares, but I've yet to fire one, so I don't know how bad they
are. The small(ish) gun fires both regular and parachute flares, the
latter having what amounts to its own barrel. I can't imagine they
would be wicked bad - they are supposed to be a safety device!

--
I carry on board a metal 25mm flair gun. The kick from these is not very bad. I
would be interested in hearing from anyone who has actually used one of the
inserts that were advertised to shoot shotgun shells from flair guns. The ad's
I remember seeing, didn't say anything about not using them in a plastic gun.
K