Just wanted to hear from someone that has tried out a turkey choke using #4 buckshot. Currently my factory full 870 pump shotgun choke patterns good using 3 in Federal #4 buckshot. I mean, to me it holds a decent 18 inch pattern at 45 yards. A coworker gave me his Undertaker turkey choke to try and I wanted to try patterning it Monday. It is the .660 non-ported choke. Any input would be great!