Who makes them.
I previously frequently read about one of the well known choke manufacturers who does this. From what I remember you give them your information, shotgun, barrel stats, shot you want to use, etc. they recommend and make a custom choke for you. Whoduzzit?
Thanks
Jim

Buddy of mine just has some made by Rhino
I am not sure if that is who you were referring to or not

Rug, I think you are probably referring to Sumtoy. Google Sumtoy chokes for info. Carlson and Trulock chokes made especially for Heavyweight 7 or TSS shot are also good options.

I have a tube that works OK. Kills out to 37. Haven't shot further with this one yet. Probably will not. I'm looking for something made for Federal Hevi Shot 13.
Thanks guys for the suggestions.
Jim

You won’t go wrong with William at Sumtoy customs. Tell him what gun and load you want to shoot, and what you want your pattern to do, and he will make it happen.

This

if you get on Kicks chokes website they provide the info the OP is searching for

https://www.kicks-ind.com/category/gobblinthunder.html

just enter your gun and shell and it will give you the best choke

Sumtoy or Rob Roberts.

Indian creek chokes have turn my head in turkey hunting the last couple years. Small custom gauges would be Sumtoy. William will work with you...

Sumtoy and Jebs are the 2 chokes I have for my 20. With TSS loads the both pattern great.

I’m kinda in the same boat. Curious what I should get for my SBE2 to try out TSS

Also which shells to use. Stuff is expensive and testing a bunch of different brands is kinda cost prohibitive. Would be nice to talk with sumtoy or rob Roberts and say send me a choke and tell me which shells to use with it.

Then I gotta get the 20g lined up for TSS and grab a 410 for the boy

Would roll my own but doubt I would save any money