I have a Carlsons "TSS choke" for my 20 gauge Browning BPS. That gun uses an Invector Plus system. The TSS tube is .565 constriction. I've patterned it at 40 yards. It patterns #9 and #7 TSS shot very well. But Winchester 3" # Double XX is too open for comfort at 40 yards. It would probably be pretty good at 30 yards. You'll have to pattern your gun to see how well it does.


40 yards, TSS#9
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40 yards, TSS#7
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40 yards, Double XX#5 (12" circle)
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Last edited by 10Glocks; 04/20/22.