No, the tubes lightly "press" in and out. Some gun - tubes require a bit of fitting, most will work with little effort. The handling dynamics is the issue with 10-16 oz tubes in a 6# - 7# gun. Most of the weight is forward, so the balance moves forward, along with the weight increase and the swing efforts increase. The size of this issue depends on the sensivity of the individual shooter to the changes in handling dynamics.
Is there no longer any source for barrel lining? That seemed to solve this problem.
DDA
