I read in one of firearm magazines that a 20 gauge is all you need for HD. After doing research, I chose the Mossberg 500 in 20gauge.Today I picked her up and I could not be happier. The Mossberg and Remington allows for interchangable barrels, which for me is one reason I chose Mossberg. It was also a good choice for the wife to handle if needed. Mossberg has a 10 year warranty, not sure about Remington.