Thanks...
...for the replies. I thought that seemed WAY huge for a pattern. I like the idea of an 18" pattern for HD, 4 feet give greate "coverage" but lousy impact.
Just to answer some of the questions above, my Mossy is a brand new Persauder, 18" smoothbore, open choke. Loads are Win AA hull, 19 gr of Red Dot, Win AA wads, 13 (oops, not 14-15) pellets of 000 buck, buffer in between the pellets.
I'd believe it might be my handloads before I'd believe something wrong with the barrel. Thanks again.