The factory 10-6 357's were heat treated like the K-frame magnums they were.

A shade tree 10-6.....or any model 10, bored out to 357 is still a 38, as far as the heat treating of the metal goes. I won't run 357's through one of those, whether or not they "might hold up to it".

FWIW my Jinks letter conflicts with the SCSW. SCSW states there were "several thousand" 10-6 357's made.

Mr Jinks says there were 1200 for the NYSP and ".... a total of approximately 3000 10-6 357's made...." "....some were returned to the factory and overstamped 13-1...."

So anyones guess how many original 10-6 357's, stamped as such, remain out there. Mine is D5579XX and letters as one of the 1200. Regards 18DAI