Most get a 12. A 20 is perfectly capable of doing the job for home protection. I have a 12 as a dedicated defense gun. My wife's 20 ga. 870 express youth model is the back up. I have slugs and buckshot for both of them. If you are small in size a 20 makes particularly good sense. A lot less recoil and weight of the gun and ammo to contend with.
Oh, I forgot to ask, what are you going to assault?
Join the NRA! Stop the Brady madness!
Last edited by fireguy; 03-04-2012 at 11:11 PM.