Well, Wallace's World had just what I wanted, and a good price on Winchester AA shells, too. Took it to the range this afternoon, along with a .303 sporter, an 8mm Lebel Berthier and a 7X61 Sharp & Hart target rifle. It was a very nice break recoil-wise from the other three. At 20 yards, it is shooting just a smidge high: If I aim at the bottom of the paper plate, the pattern center is just above the center of the plate. This is a good thing for squills running up the tree, but I will have to sort it out for bunny and bird work ...
Ah, what a pleasant chore.