I too shoot ZZ at Deep River every month. I shoot two guns, a Perazzi SC3 with a custom stock parralell comb and a Winchester 21 with a custom stock parralell comb as well (which I am presently trying to sell). The P-gun has 30 1/4" barrels and the 21 has 32" tubes. I shoot B&P Flyer loads through them.
But we have a guy who shoots a Beretta 391 field gun with AA Super Sport loads that takes a lot of trophys. He shoots low gun also. So go figure.

Mike Proctor