ah...a man of reason with some knowledge has surfaced... as for this particular receiver, please keep in mind that at no time was the metal heated to above its critical temperature. consequently, the original factory heat treating of this receiver was not altered... as for the percentage of loss in a factory heat treating environment, i would suggest that it was quite low. i figure the factory heat treating mechanics were working with the same specs every day and rarely made mistakes. compare that with the typical rehardening mechanic of today. due to the huge variety of different manufacturers products thrown at him, he probably says a little prayer and crosses his fingers each time he fires up the furnace; where 1400 to 1600 degrees F is required to bring the metal to above critical temperature. that is what is required for the bone charcoal rehardening/recoloring process to be effective. i gotta believe his percentage of loss is quite high...
Last edited by ed good; 06/02/10 08:15 PM.
