I doubt the model 12 in 14 gauge but had a friend that had a 50 in 14 gauge. It was in South Carolina many years ago. It was deadly on birds. Birds in that place and time meant Bob White Quail.:}
I supposed it could have been compared to a back bored 20 gauge, but most of us thought it more effective. Winchester could have had a good thing, but it died a quick death. Wonder the reason?
Best,
John

Humble member of the League of Extraodinary Gentlemen (LEG). Joined 14 March, 2006. Member #1.