Okay, just did some more seaching and the Truglo choke is a gobble stopper and shows a .679 constriction.

Doing my research, the choke tube that was the most recommended for the 835 was a cheap choke called "Star Dot" that was a .675 constriction. Of course they aren't made anymore.

I might buy one of the Truglo chokes first (they are $19.99) and if it patterns well then return the unused Jellyhead choke that cost $49.99.