My old 1950's Winchester 63 rifle misfired and jammed due to wear between the action and the case. I put some strips of this tape on the left side of the screw and it seems to fix the problem. I rubbed the part with rubbing alcohol first and so far the tape has lasted about 100 rounds of 22LR. The adhesive on this tape doesn't seem to interfere with the pressure of the explosion, oil, and shots fired.