I've got a SX3 and rhino 660 and 670. Been shooting nitro hevi H518 but was curious about moving to a 3" TSS. Curious if anybody got any leads?
I have an SX3 in 12 and an SX3 and SX4 in 20. I had the best luck with Indian creek chokes in .670 and .570 and .575. Give them a try.
Carlson's .680 was awesome in my Invector Plus guns with TSS. Indian Creek did similar number in .675, but Carlson's is half the cost.