In patterning my shotgun (Mossberg 835 with a Hastings .685 choke) I found that 3" and 3.5" number 5' s did the best. But number 4' s were real close. Given the extra energy of the number 4' s---I have used Winchester HV 3.5" number 4' s for 3 years and could not be happier. (Well---not so happy while I patterned it. My shoulder was like hamburger after that exercise.) Twice I did a real poor job of estimating range and rolled both turkeys in excess of 60 steps. Granted---those shells pack a wallop---but I have yet to feel it when I have taken Mr. Tom.