Nope!! The story of the gun where he loaded both barrels, put the safety on, and pulled the trigger was about a Super-Fox. When he pulled the trigger, the safety went forward, both barrels fired, the gun opened and ejected the fired shells over his shoulder.
Elmer did write of having to get the rotary bolt in his NID Magnum-Ten, serial number 500000, refitted twice over the course of the years he used it.