I only tightened the clamps to the tube with at least 100+ bar in the tube. Did it once when empty and you couldn't budge the screws. It does expand.
Well then here is probably your answer. Tube expansion and contraction plus flimsy orings in the same bracket to center the barrel equals an inconsistent gun. Someone should offer a scope tape for Wildcat owners. My guess is one of two things concerning some guys not having this issue and some do. One, FX had two different batches of tubes and there is a tube lottery. Or two, there is a magic torque setting when tightening the screws on the clamps.
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