General Stewart demonstrates:
https://www.youtube.com/watch?v=IACjOvyx5hs
Not a as dramatic, but here’s a shotgun start of an FM-2 “Wildcat” fighter.
https://www.youtube.com/watch?v=65qrzgbTTcQ
I remember reading in “Air Classics” magazine around 1970 or so of a “Wildcat” restoration. The owner replaced the original shotgun starter with an electric one, because he considered an electric one more reliable, and he wasn’t sure of the availability of the cartridges. Obviously the owner of the plane in the video managed to find some.