I'm really seriously contemplating about getting an IC Black Diamond choke. Has anyone used one with an 870 super mag SPS-T12 ga.with a 23 inch barrel? If so, what loads have been best for you? I normally shoot Rem. Hevi shot magnums, but they stopped making them a couple years ago. I still have a box and a half of them. I also went and bought a box of Win. Supreme elite Xtended. Went to Academy tonight and found some Hevi 13's in the bronze, so I got some while they had them. Just about every Hevi 13 you find around here are the green ones, which don't shoot worth a flip in my gun using a Jellyhead choke. BTW, I shoot 3 1/2 inch. I have heard really good things about the IC choke here, so I thought I may just give it a try.