I have a couple 870 sps's and I'm shooting the 3" Magblends out of mine. I tried the HD choke, along with a Kick's, Jellyhead .665, Indian Creek, and an old Stardot. The Indian Creek and Stardot patterned the best out of my guns so those are the ones I'm shooting. I'm getting anywhere from 170s to 200s out of those combos with 3" Magblends.