I don't own any "classic" shotguns, but my go to guns for roosters are a Beretta Black Onyx 12 ga. 28" O/U, and a pair of Winchester 23 Pigeon Grade Winchoke 12 ga. 26" S/S's. Each of these guns is plus or minus 25 years old. Not nearly old enough to be any good!
A load of 2-3/4" 5's works well enough.
In an effort to improve my image, I have acquired several 20 gauge shotguns, which I have yet to try out on roosters, just the skeet range, since I am forced to work for a living, and am extremely busy. But, am looking forward to shooting my Beretta 687 Onyx 20 and a Beretta 471 Silverhawk 20.
