I know how dangerous such a conversion would be, but the reason I did not add a precaution was because, if someone did something like this, I doubt if there is any precautions would get their attention.
What I mean is, if someone drills out a barrel for another cartridge, completely ignoring the bore size, chamber, new cartridge size, and everything else, what could you say to them to make them aware of the danger?
There is nothing to prevent someone from doing this.
