Agree with Ray. Best thing to do - make it a learning experience. Draw temper at 350 then test the edge (will most likely be too hard if you got the quench right), re-temper at 375 and re-test, then again 25 deg higher until you get the performance you want. Worrying about actual RC hardness is a waste of time until you start getting the results you want .... then it's just a number for techno's to banter about.
Bottom line is if a knife performs as designed then it is right, otherwise just a crummy poorly designed screwdriver.
Note: Tempering temps is also subject to what you use to do the tempering and how you go about it.
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Carl Rechsteiner, Bladesmith
Georgia Custom Knifemakers Guild, Charter Member
Knifemakers Guild, voting member
Registered Master Artist - GA Council for the Arts
C Rex Custom Knives
Blade Show Table 6-H
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