The revolver forum is near the top of the main forum page.
http://thefiringline.com/forums/index.php
Follow that link, that's the main page.
The revolver forum is the second one down.
You might also want to scroll down until you see the Harley Nolden Memorial Research forum or possibly post it in the Curios and Relics.
Please pick ONE only, depending on where you think you'll get the best answers.
General forum rules are here:
http://thefiringline.com/forums/faq....aq_forum_rules