longcruise
70 Cal.
Google isn't really your friend but sometimes useful 
https://www.markelliottva.com/2016/09/charcoal-bluing-barrel/
https://www.markelliottva.com/2016/09/charcoal-bluing-barrel/
Flame-bluing Kibler barrel?
- Thread starter wiscoaster
- Start date
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Thanks for posting but really quite a ways beyond what I want to get into.Google isn't really your friend but sometimes useful
