Well..,. I thought I was done, but turns out my tempering was too soft and spring relaxed a bit after some actual use on the rifle, so I hardened again and tried tempering in burning oil. Still too soft and relaxed after use. I hardened one more time and tempered this time by sight. After reshaping and hardening and polishing, I laid spring on a heavy piece of steel and heated the steel plate turning the spring on the plate frequently to get the color even all over and brought it to a deep purple nearing blue. Shot a match with the rifle Saturday (25-30 rounds) and so far it is holding up.
So much for mystery steel for lock springs. I aquired some nice spring stock samples, 1095 and 1075 from a good friend the other day so my next one will not be made from junk.