I like the XR's! I just switched over my old school non-ported 24" barrell 835 (1994 model) to winchester extended range #6. At a leupold RXII verified 40yds...1st shot with clean barrell = 200 in 10", 2nd shot after bore snake twice = 188, 3rd shot after bore snake twice = 198. these patterns were shot with a Truglo SSX .670 . The 20" didn't hold as many shot as I hoped (160) and I've thought about opening it up with a Jellyhead or tightwad but I'm going to leave it alone. For comparison, my 935 shoots hevi 6's slightly better and my newer 835 is setup with Hevi 7's shooting 290 +/- in the 10". This older gun will be with be most of the year!