I had the 16", and I didnt really think it was as quiet as some folks claim. It is certainly 'quieter' than lets say...30-30 or something, but the shorter barrels are of course louder. I get quieter loads with my longer SKS loaded sub-sonic with big bullets. I have looked into these loads quite a bit for pests in my chicken coop. The best thing I have found is a long barreled .22 rf loaded with 22 CB ammo. The normal CB's work great in my tube mag, and they have CB long that will work in a clip magazine. These are fun bullets to shoot, and definatel have enough poop for close work. I used to have a Marlin 22 bolt rifle, and that was the quietest of all. A single shot with a 21-22 inch barrel would be awesome.