Yes. Out of the 5 tubes shot with my 26" Maxus the IC patterned the worst with Longbeard XR #5 and #6. Lots of gaps/holes in the pattern. Too many guys have great luck with IC tubes so this has to be a case where my gun simply didn't like it. It happens all of the time.
I also shot a Kicks, HeviShot, Jebs and Carlson's Longbeard XR tubes. The Carlson Longbeard XR tube performed the best in my gun.
That said every gun is different so please use this as simply a starting point.
All of my testing was done at a laser verified 50 yards off a bench.