In my post, part 3 - Ballistic vest live fire test, I linked to a piece from Time.com called America's Most Wanted Guns which highlights an ATF study of guns used in crime. The gun at the top of the list is a Smith & Wesson .38 Special revolver which is similar to the Taurus 85 .38 Special that I used in the test, and the reason why I linked to that piece.
Somehow I missed number 5 which is the Mossberg 12 gauge shotgun, a gun I also used in the test to fire two slugs into the vest, one of which penetrated. I think that is important to note since the 12 gauge Mossberg 500 is available just about anywhere.
I know many people who own the Mossberg 500, and the reason is because it is high quality and affordable. That's all.