Interesting! Imperial era (crown R) firing pin, likely on its 2nd life (renumbering) later heated red hot & twisted about 120 degrees (1/3 turn) Was this found in an assembled bolt, or as a loose part? WHY this was done might be discovered by assembling it into a bolt without the mainspring, may make it so the safety shoulders wont disengage from the bolt body, & pin not extend out to strike the primer. (out of time). I believe this was done in order to make the rifle NOT fire, but might be some other reason.