A while back i posted my patterns with a kicks gobblin thunder .655 out of my 870 super mag and it was borderline in my opinion, i sold a jellyhead not too long ago because i never wanted to shoot hevishot but now but then bought another one and im gonna give it a try considering ive heard nothin but good things from the hevi loads and plus they holds NWTF records. I have the .665 jellyhead and im looking for what size shot im going to need because im new to hevishot, i need all the help i can get , just trying to save a little money and trying to get my gun to shoot its best since seasons just around the corner.