Originally Posted By: Samuel_Hoggson
Right, Buzz, and that's not counting the 28 and .410.

Other than the Galazan Model 21s which are built on scaled or Baby frames,
the Winchester 28 and 410s were built on the 20 gauge frame.
20 gauge tubes were used and drilled to the appropriate 28 and .410 bores
resulting in extremely heavy and poorly balanced sub gauge guns.