I just got the word that tha bugman with his 835 shot 274 shot in a 10" at 40yds with the TruGlo .670 SSX choke I recommended. Here's what he said. Got the results I was looking for today 274 in a 10" circle at 40 yards! The tru glo choke you recommended was the ticket!
Now I'm guessing he was shooting Hevi-13 3.5" 2.25oz #7's. I hope he don't mind me posting this. But I know one thing. I'm gonna buy another one of them chokes. That's excellent for this cool of weather.
Updated: Sorry for the typo.