I'm talking about the OLD M37; the one chambered for the 2 3/4 in shell. The newer ones aren't worth a hoot. I won't even put them in the running. The 37 was a Browning design. Actually the Rem. 31, and the Browning BPS are both very similar operating systems; almost the same guns. The highly acclaimed Win. M12 was very stiff compared to the 37. I never did like them. The Moss. 500 is actually a good gun for the money. The 870 is a very good gun. I'd say the OLD M37, the BPS, the 31, the 870, then the M12 and the 500.