"Gunner" wrote
Interesting. What temps should I run up to? I have a furnace.

My Tempil Basic Guide to Ferrous Metalurgy shows a normalizing temp of about
1600 F. for steel with 30 points of carbon. 4130 normalizes in still air,
very still air, don't let the cat wag his tail near the cooling piece and
don't fart. A full anneal can be had by very slow cooling in the furnace.
The stuff will cut like butter then and will need to be re-hardened after
machining.
Good luck.

--
Tom Wait
Barton Rifle Shop
1805 Barton Ave Suite #9
West Bend, Wisconsin 53090
(262) 306-RIFL (7435)