contrary to what the ammo makers,gunmakers, chokemakers and gunwriters want you to believe turkeys are not armor plated!(they are trying to sell you something) I shoot a gun at news papper with a dot on it to check point of aim and if the pattern has any thin spots(several times) then go to my pop can test with a 16 or 12 ga starting at 40 yards, shoot at a 12 oz pop can if I get more than 8-10 pellets hitting target I more it back a yard or two and try again if I don't get 8-10 hits I move it closer once I get in the 8-10 hits range I fire several to make sure of consistancy that Is my max range use #4's #5's or #6's for turkey witch ever give you the best pattern. using the right shot for the game you are hunting this method seems to work for about any small game IMHO
Roy