Whoops, sorry, forgot to put that on there... those are 3" target spots. The cardboard measures roughly 30" from top to bottom.
Average spread for both 30 yard patterns (Full and Turkey Super Full chokes) is about 18 inches. Average spread on the 40 yard target (Turkey SF) is about 21-22 inches. Hope that helps!!
I've also got an HS STRUT "Undertaker" choke tube, I think it measures .665 as well... I'll have to try it out with the buckshot and see how it does. Gotta find some more cardboard or big paper or something...
