The Straight Dope Message Boards (http://boards.straightdope.com/sdmb/) have a lot of gun experts. Like, people who know every little crazy thing, and do a lot of shooting, or have been in the military, or are foreign, or what have you. Worth a free guest post, maybe. I don't have an account there anymore, or I would search the archives for you. You could go back chronologically as far as you want in General Questions and In My Humble Opinion (maybe even Cafe Society) and just search the titles for guns or rifles or revolvers.