"Strip it, clean it, Teflon it, lube it" is SOP for any vsr, especially one that's not been used for a while.
While its apart check the outside of the cylinder for any scoring to see if it's catching on anything.
While it's out double check the scope rail screws are not protruding into the breech. Aftermarket screws or too tight can come through and catch on the cylinder, it should be smooth to touch.