Winchester 1300, NWTF model with the laminated stocks. The only Turkey Choke I have at the moment is an older model .660" Jellyhead. I was going to give it a try first and go from there.
I was thinking about picking up a Carlson's .640" due to the small shot size, but I wasn't sure if that would be too far in the opposite direction.
The problem with patterning the Hevi13 shells are the outrageous price tag.