I went to hevi-shot 5s last year. Was considering investing in a turkey choke tube, but after reading a little about hevi-shot I bought a box to see if it improved my pattern with the regular full choke in my gun. It was amazing how tight it patterned out of the regular choke. I took a tom at about 35 yards last spring and it had five pellets in just the skull, two in the beak. I didn't bother counting the neck region. I'm sold on the stuff. It is expensive, but it only took a couple of shells to sight in. Then it is not to bad with the limits in numbers of turkeys I can take. Still have six shells for this season.