I have the ported .695 undertaker in my 20" 835 and it does very good with 4 shot. With LB XR 3.5" 2oz 4's I get mid 140"s in 10" every time and very close to that with the win LB XR 3" 1 3/4" 4's. I shot my best pattern with it this spring using the LB XR 3.5 4's several weeks back which was 177 in 10" at 40yds. I use a rangefinder to mark distance. It also shoots the gray box win super x 3" 1 3/4oz 4's very nicely out to 40yds. It's been a while but I believe they were in the 90's in 10" at 40yds. I haven't shot much 5's or 6's through it but the few i did were too open at 40.