Originally Posted by firelt72

The 500 you have should be a changeable choke. The cost of a turkey choke is not expensive. I'd buy the choke, shoot a good quality load and look at the 20g as a turkey gun. It is lighter and less kicking than the 12, the 12 will work, but a milk jug isn't the best patterning object as the turkey head is about the size of the fist. To pattern, take multiple brands of shells and sizes of shot. try it out. I take a piece of construction paper and draw a 3 in circle. I pattern at 20 and 40 yards- the 20 will go out to 35ish I think. This year I am patterning at 10 also. I hit a bird last year at 10, and the shot was low. So it wasn't a clean kill. My pattern had not spread yet. After I get the best combo of pattern and choke (I like a strut stopper xtreme for a moss 500) after I get the best grouping I put a turkey target up or a pop can on a stick and see what happens. Long answer I like the 20 for your situation.