***This distorted the ball, and ruined the accuracy therefore “proving” their demon theory. ***
You by any chance got a copy of THE AGE OF FIREARMS by Robert Held? This is covered in his book.
It seems the rifle was declared ok because the spin caused the demon to be thrown off the bullet.
All the info I have is that the priest proved the presence of demons made rifles evil, the tests were rigged because, like politicians today, the elites of that time wanted the results that would allow them to ban guns with a minimum of fuss from the populace.
It didn't work but they gave it the old elitist try. This type of phony polls and fact distortion is going on today, they never give up until force is used to make them stop.