Hi all. Need to see if someone can give me some measurements from a SNT barrel. I need the choke diameter as well as the outside barrel dimension. I'm trying to determine if the guy who sets up my turkey shoot guns could add choke tubes. I love the idea of the short barrel and GR sights with 3.5 inch buck for our coyote infestation. We determined long ago you don't need a long barrel to get the best patterns, you need the correct choke. Any help or tips would be appreciated. Thanks