I prefer an over and under, but just bought a 1965 A5. I shoot strictly 5 stand and sporting Clay's. In myCitori 725 o/u I shoot 1200 1 1/8 7 1/2. That doesn't allow the a5 to cycle properly. I have no idea what the friction rings can or will do. Like I said I'm an o/u fan, but really like shooting the A5.