Dan,
After a day on the pigeons I put a few shot birds in the freezer, then get them out the night before to defrost or if on the spur of the moment defrost in the microwave (as long as my wife is out of the house).
i use the shot birds on the rotary, flappers and bouncers then also have two dozen flock coated shells which I use to form the pattern.
Hope this helps.
ATB 243 Stalker.