I stuck my finger in it, and it has black powder residue. Also, I don't thing it's waterproof.

If there’s no primer or primer pocket and it is rimless I would suggest it’s a signal flare of some sort.





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I think it's a hand reloading tool.

Mike, that’s what I was thinking, I just can’t see how it was used.

So I won 4 lb of Extra-Lite?

Handle

If there is a friction fit in picture #1, I am going to guess a chamber measuring tool. Insert the inner piece into the base until barely held, insert into chamber, close gun and reopen, then measure OAL. Looks like the inner piece is non-tapered and would indicate the length of a fired case.

Arts, too big to fit a 12ga chamber. The opening measures 7/8 across and it's 2 1/4 deep.

:rotf::rotf:

Sorry. I took the opening description to mean that the head part would fit a 12 ga chamber.

Sooo...

What is the the diameter of the rim and head section? My same guess would cover a 10 ga or 8 ga chamber length gauge.