ORIGINAL: mouthcaller
Highlander Sports out of Huntsville Alabama peviously sold the chokes. They have since went out of business apparently because their webpage is no longer active (
www.highlandersports.com).
I found my Star Dot .676 for the Mossy 835 on ebay a couple years ago. I think I only paid 25 dollars or so new. Ebay would be the only place I know to look for one.
Good luck
Mouthcaller.
I got mine on Ebay too. I think Ebay went the Hillary route though, I was looking for choke tubes for my 835 and found exactly zero hits. Whats up with that?