The Savage 220 is the one you're most likely to run across. The older ones, with top lever opening, are better than the later ones which had a sidelever. The 220 was even offered with a factory-installed Polychoke, or with the Savage adjustable choke. Since your goal is to find a gun for grouse and woodcock, one of those would be nice. Otherwise, a whole lot of single shots were choked full, which you'd likely want to open for the birds you're after.