On Jun 12, 12:57*am, wrote:
...On those case-
hardened actions, these days you can get carbide drills to make the
holes, old-timers had to use mercury-hardened carbon steel drills and
even then sometimes didn't manage to chew through the skin.
...
Stan-

I read somewhere that melting a blob of solder on the receiver would
anneal the case enough for drilling and tapping. I haven't tried it.
Case-hardened scrap hydraulic cylinder rod cuts well enough with
carbide.

jsw