I recently bought a stoney point oal guage onsale for cheap along with a couple of dummy cartridges in calibers that I reload. I was almost amazed that I got very similar OAl from the guage as I did using homegrown methods. But the OAL guage is just much easier. (I like easy)
My question is: Instead of sending fire formed cases to stoney point to have them make dummy cartridges, could I drill and tap my own? Would there be any safety or technical problems with me doing so?