I've got a few gun noob questions: 1. I've heard that .22 CB is the quietest rimfire ammunition you can buy. Comparable to a loud air rifle. There aren't many houses around me. Just one next door that's occupied by a couple of cool old guys. Will I be able to squeeze off a few shots in my backyard without being noticed? If it's any help, I live in the sticks where gunshots are a fairly common occurrence. 2. Is my backstop suitable? I usually use it with air rifles. It's about 8 inches of old catalogs and magazines backed with an inch of particle board and an inch of sheet rock. It's dimensions are 3'x4' and it will be shot from about 10yds away. 3. Will .22 CB be able to cycle the action in a Mossberg 702 or will it jam? 4. Where I live, it is misdemeanor when one, "discharges any pistol, rifle, shotgun, airgun or other weapon, or throws any other missile in any public place, or in any place where there is any person to be endangered thereby..." So IBJailTime? Please don't make fun of me. I'm new to the firearms thing.