Hello CWK and welcome to The Board.
"Not for ball" means that that barrel is tightly choked and not meant to fire solid lead balls.
If you cannot figure out how to post photos you can mail them to me and I'll do it for you. In any case, to be able to post them yourself you need to upload them to some site such as Picasa.
I should add that it is better, to have clear photos, to use a tripod and no flash and add some light with a desk lamp. I am not talking professional here, only to get proper detail so the local experts can give you adequate information.
Best,
JC
