Air Arms Owners Club

Anyone use the .22 piston weight in a .177 tx 200, how does this feel in comparison.

Absolutely no idea!, but, what is the goal / objective of your experiment?, springers can be tuned / modified in so many ways. But, without a clear objective it is impossible to guide or help you.
More power, less power, better consistency, less temperature related consistency changes, less recoil / less hold sensitivity, more / less pellet change tolerance, less cocking effort, longer service intervals, less twang or subjective noise related topics, smoother cycle / faster / lazier cycle........................

They are so simple and fast to strip just try it, worst outcome 3 minutes wasted