Hello i have a Rem 870 Super Mag with a 26 inch barrell. I have a bunch of Winchester Supreme (Older Ones) in 3.5 inch no 5 2oz. I was wondering if anybody could point me in the rught direction as to what choke has worked with this set up. As far as chokes i have a Jellyhead in .660 and .665 and a Sumtoy .665 Thanks!!!