Mag blend/870sm-anyone getting a good pattern??

[strut2]

I'm shooting an 870 super mag with a .665 jelly head choke. My gun shot alright with mag blends at 40 yards. I don't remember a bb count. However decided to try some hevi shot #7 and was pretty impressed. I got 306 bbs in a 10" circle at 40 yards. Good luck!