superstrutter:
I have had the same results with the Remington Hevi Shot.The Mag outperforms the high velocity in my Remington 870 SPS-T supermag using both a Remington and Undertaker .665 choke tube. They are also the best performers in my 835 with a Carlson .675 tube.I have been shooting # 6s and there is no comparison to lead.Hevi-13 and Remington Hevi shot are the same.I don't know if Remington will be loading Hevi Shot anymore since the manufacterer of the pellets began marketing their own ammo.

Bill