I have carried a Raptor Tri-Star 20 gauge for 4 years now and have never had any jams, ftf, or any foul-ups with this gun. For in the woods hunting I shoot a Carlson .568 and if I'm in more open fields I have the Carlson.555 choke. I don't shoot the TTS, just Winchester Lb's #6's, they give me the pattern that I want without paying $10.00 a shell. I have no experience with the TSS, but for the woods, fields and mountains that I hunt the little Tri-Star and the chokes and load that I mentioned does very well for me. Good luck with your new Tri-Star.