- Location
- Beaverlodge, Alberta
Probably would be the best way. When I used the masonry bit to cut through the hard spot it had basically spot annealed it, that is why I was able to drill to the proper size and tap with the hss drill/tap afterward.
Actually I was told...some use spot annealing. It's a method to remove the hardening just in the one spot you're drilling. Personally I didn't like the sound of it.
http://www.cnczone.com/forums/general-metalwork-discussion/2826-drilling-hardended-steel-update.html
Probably getting the whole receiver annealed, drilling the holes and then getting it re-heat treated is the way to go.
If anybody knows the whereabouts of this rifle, I’d give my eye teeth to buy it back.
Good luck with your search, I will keep my eye out for it as well. I think we all have the one or two guns we let go of that we kick ourselves for.