ORIGINAL: bowhntr1980
I'm not sure how far back you can search but SwampCollie had a thread "how to pattern a turkey gun" and it was excellent. I was able to relocate it by googleing "how to pattern a turkey gun". It also had pictures attached to help explain what he was doing. Makes alot of sense instead of using the reg. turkey targets. Good luck
Here's the link to what bowhntr1980 was talking about. Very good and informative thread!
http://www.huntingnet.com/forum/tm.aspx?m=2074825