I ran a non ported JEBS on a BPS with a 26" barrel for 10+ years and last year bought a SBE2 with a 26" barrel and put a ported JEBS 655 on it, both of them threw great patterns. Since I had them on two different guns, it makes it very difficult' if not impossible to compare the two. I would suggest that you call JEBS, tell them what you have and ask their opinion on this. They are really great guys to deal with and I am sure will give you an honest answer. They know their chokes and how they perform on various guns, barrel lengths etc.