I use Winchester Hi Density 3.5 inch #5 out of my Remington 870 Super Magnum...a powerful load.Good to 40 yards plus, if necessary.....in the spring I had 2 toms running into my decoys THEN they decided that they didn't like the look of my hen decoys andtook a right angle away at 40+yards PUTT PUTT PUTT PUTT, on the 4th putt I shot as he was running like a bastardand he went down like he was poleaxed, a 17+ pound tom, that is why I will continue to use these particular shells until I feel that they arenot consistentlyperforming.