I thought in your other thread you wrote that you use a 28 gauge for turkeys? Which is a bit uncommon, but with a tight choke and inside of its limitations range wise will do the job.

If you like to see the smoke, your Knight will give you that effect. There have been a few smoke poles loaded with ungodly shot charges (some as high as 3oz) that have killed turkeys at some pretty haneous ranges. Your 870 is capable of the same if you find a choke/load combonation that it likes. Gotta do some patterning.

I presonally prefer #6 shot. Always have. Opinions vary. The only right answer is the one that shoots the best out of your gun.