The TK-2000 is an awesome patterning shotgun!
I had one and the patterns were very tight & dense. The best load was 100 gr T-7 ffg behind the 2.5 oz shotcup. With 110 gr T-7 recoil was bad, and with 120 gr it was painful to pull the trigger and patterns oped up quite a bit. I even bought the IC choke for it, and it patterned like more like an improved modified!
But I had 1 big problem with the gun. It's stock dimensions and my body are not a match! It hurt me too much to enjoy shooting, so I sold it to a hunting buddy that loves Knights. Not trying to say anything bad about Knight, but their stocks just don't fit me! EvenKnight rifles give me a lot more felt recoil than most other brands.