don't remember what it was called, just remember seeing it here before.

Someone made one, had some huge huge shells for it, I think it was like a 12 gauge with a much longer case, that was also brass.

I do remember in the picture (or video, w/e it was) it blew a 5 galloon bucket of water to micro specks of peices of bucket, lol.

any help is appreciated, thanks.