Has anyone used this choke before? I have a 870mag and got this choke to try. Its a super full choke with straight riffling in it. What loads pattern good out it for you?

The Idea is to stop the spinning of Wads that effect flying patterns. I'm interested in knowning how well it works. I have a hastings Wad Lock barrel that is in the same area and the Choke was made from. It is a good patterned gun , but very minimal from the barrel...BT

I like to try one of those chokes. Cant seem to find them anywere...

Try contacting Briley. I have a Briley straight rifled turkey trauma choke tube in my 2 3/4" 12ga Ithaca M37. It turned this gun into a true 40 yard gun with remington 1 5/8oz #5. The previous best with a win-choke extra-full and winchester 1 5/8oz #5 was solid 35 yard patterns. The straight rifled seems to have improved all loads tried . The remingtons just pattern slighty better.

I found the choke at Dicks for $8.00. I haven't shot it yet but figure for 8 bucks its worth a shot.

I bought one last year on close out .
From my tests very little increase in patteren dencety over my Undertaker tube with Hevi Shot reloads.