I agree with Old Grump. I use my 20 for turkey hunting every spring and have never had one get away in 22 years. I reload #5 in 2 3/4 and for fall I will use #4.
For duck and geese, I've used 3" #1 steel and was never impressed with steel, my 12ga using steel did just as crappy as the 20ga, which is why I quit waterfowling about 15 yrs ago and still have a case of #1 20ga left.
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