I shot some RST 2inch 12's out of a Stephan Grant hammer gun last January at Morrison Pines. No recoil and fun to shoot but the Quail didn't like them. I bought a case of RST paper 2 inch shells at the Southern and will use them in an English light game gun for Grouse and Woodcock this fall.
There was an ammunition company called New Era from Michigan and Brian (the owner) made up some 16ga 2 inch paper shells and I have about 50 that I've been saving for some odd reason.
Short shells are still long on fun