I like #4's. Bigger is better IMO. I've killed gobblers with #6's but when cleaning the bird, I'vealways found pellets wadded up in the feathers right next to the skin----no penetration. Those pellets didn't help in the killing of the bird. What good are extra pellets if they don't penetrate. I've never found a #4 like that. My 870 will put 11-13 #6pellets in the kill zone @40 yards----with #4's I get 7-9 hits. #4's are what I have used for the past 15 years-----never lost a bird. 40 yards is my maximum range. CB