Already have a 37. Have had a Winchester 97 and a 12, too. The 520 was the last of the shotguns that'll shoot every time you work the handle if you hold the trigger I didn't have. I have a slight pinched nerve in my left arm, and at least to me the 520 is easier to operate than the 37. Longer pump stroke, though. Thanks for the leads, and I'll see what they have.