I have never named a gun, till I touched off my 72 carbine rifle one cold quiet morning. The echo and roar rolled thru the woods.
It named it's self, 'Ole Thunder'!
I made 3 round ball cutters with a 'Spin Index' and a surface grinder.
I had to make the holder and stop. The last one I did like this was in the mid 80s.
I cut test holes in aluminum to make sure the worked OK.
They are made from old junk end mills.