Been lurking here on this thread for ages. Thanks, Osprey. Kind of made me wish I'd kept my M12, but when I want to put +P through a 6-shot Al alloy gun (which I do, frequently) I have a few Colt Agents and Cobras that get that duty. FWIW, I've never seen one of them damaged by such use, either, but I've never put anywhere near the number of rounds through one that you shot here. I do have a Cobra that has digested upwards of 300 rounds of +P, though, with no visible ill effect. Thanks again; good work!