[targa911S]

Crescents are notorious for having the shakes when it comes to being off face. DO NOT shoot 3" shells in that gun at all. WAY too much pressure for the barrels, the wood, and the action itself. These were inexpensive "hardware store" guns. Crescent made guns under 200 names and were marketed by H.D. Folsom Co. The .410 or The Quail model is rare though as are most .410's. Most Quails have been shot a lot and that is why it's off face. Sometimes you can tighten them up by peening the hook/lump between the barrels. The rest of your problems probably stem from 90 years of crap, old grease and such, inside the action. A complete disassembly and a good ultrasonic cleaning should get it right again. If you choose to do it (cleaning) yourself PM me and I'll talk you through it.