Your dilemma can be solved pretty easily with a little work. First, if your shooting steel, you need velocity to make it work best for you. Be looking in the 1500 fps range. Determine the size of shot you need to get the job done. For decoying Geese I'd think #2-BB would be the ticket...not sure in your specific case. Lastly, set your gun up with the appropriate choke for your hunting conditions and then try a several rounds of each on a pattern board to determine pattern uniformity. Let the gun tell you whic one it wants.
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