Thanks to all who replied, I really appreciate your help. I was in Cabela's recently and picked up a box of 3 1/2" Winchester Xtended Range HD #5. I really wanted 6s but they were out. I'm picking up my Super X2 today and will have the factory extra full tube plus a Briley .675, a Pure Gold .670 and an Undertaker .665. If none of them pattern the 5s well, I'll order some XRHD #6. If I still ain't happy with the patterns, I'll pick up a TruGlo SSX .643. Anyway, I'll post the results when I've had a chance to go shoot.