| 500Nitro |
| (.450 member) |
| 28/11/11 09:54 AM |
Re: Color hardening
|
Ray St. Ledger; Birmingham, England ?
Also, I thought the colours were determined by the steel, coke used, packing, length of time etc etc.
ie H&H type versus Rigby type of CCH ?
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Ray St. Ledger; Birmingham, England ? Also, I thought the colours were determined by the steel, coke used, packing, length of time etc etc. ie H&H type versus Rigby type of CCH ? |