Kicks .560 in 870 any good results?

[chipper]

Anyone ever tried the Kicks GT .560 with Hevi-7's or Fed. Heavy weight #7 in the 870 Compact 20? What kinda patterns did you get? I'm still working on my sons gun for pattern perfection, Thanks fellas!

[jtharpe]

Kicks says not to use heavyshot in there chokes. I know some people do but there has got to be some reason the man says dont use it.
I would look at pure gold or indian creek.