I had to buy a set of three, that's three drill bit's and three taps from a specialty company. I looked and ask people for a week before I found them!

If you want a set, set me know. Their brand new with the plastic coating still on them. I could let a set go for $25.00, inc shipping.

They are very hard to get, but I just finished cutting one of my 338 edge case and it works perfectly with the Hornady/Stoney tool!