Tippmann custom pro w response trigger 14" J&J ceramic barrel, 68/4500 tank
not a J&J 14"
They were tough, no barrel breaks, no real visible seams no breaks in hopper
Couldn't hit the broad side of a barnw ith this box
The balls were visibly oblong. They were erratic. They were not wildly erratic but you could have stood 15 feet away and one of 15 balls would actually hit a mansized target.
I used them in a very tight bunker game and an open woods field and folks just laughed at how they shot. The day started cold and warmed up so the temp was not a factor.