I have two 870s...a regular 12 ga Wingmaster and a 20 ga Express. I set the 20 ga up for HD with synthetic furniture, 18" bbl, & extended mag loaded with 3" #2 buckshot. I figure it will do the job in close quarters inside the house and my wife can handle it better than the 12 ga. I owned and hunted with a Mossberg 500 and it was a good, reliable shotgun, but I traded it off for the Wingmaster years ago...prefer the looks and heft of the Remington.