I pour my own lead hammers, bars & punches. Not to choosy that I have
to use babbit. I have a lot of mystery lead that is hard stuff. Very useful
to tighten up old doubles and single barrel shotguns. The mistake most
made with these tools is " pecking ", you need to figure what needs done,
support it well and give it a solid wack. Check your work and proceed from
there. I have never bent a frame to line POA, but have bumped sights on
service type revolvers. To straighten shotgun barrels ( not doubles) I built
a rig with sliding stirrups and a pressure yoke powered by a 3/4 ratchet.
All this stuff requires the feel.