Hoser:
Polywad used to make an excellent spreader load (called "Spred-R" if I recall correctly). Don't know if they still do, but that's where I'd start. I used them for a while in a long since gone Winchester Model 21 and they killed pheasants with considerable effectiveness. At least in that particular gun, they seemed to open the pattern about one degree of choke (full to modified, modified to improved cylinder).
I found a box in the back of my ammo cabinet recently and used them on a preserve hunt, shooting them out of a Miroku sxs choked M/F. They performed exactly as I recalled - hammering birds. The three guys I who were with me were most impressed at their performance.
Rem
