I shot my 870 with the 20" barrel yesterday. It's always shot the 3" mag-blends thru a tru-glo very well but I wanted to try the fed HW 7' s. Tried it through the ventilator, factory super full, and the tru-glo. I was not impressed to say the least. What's the best choke for that load ? I have a 665 jelly head that I didn't get to try. Just playin around a little but I'll still be shooting the mag-blends since I have a couple of boxes left.