If I get the time in the next few days I will shoot a target and post it. Or email it to you.

As far as I know, unless its been done recently, the Star Dot is still Star Dot, they were just bought by another company. I had one on my 835, matter of fact I still have all of my 835 chokes, just sold the gun. It was very impressive to be a $20 choke. THe only thing that out done it was my BPS/CnC combo.