Jon
A few years ago Rick Jamison done an article in Shooting Times where he used compressed air for barrel cooling. Looked like he used a empty propane tank. There is a company that makes these things. Can't verify that. He simply hooked an air hose up to it. On the air hose was a nozzle like we use for parts cleaning and drying.
Now how much air one of these puppies hold I have no idea.
Best wishes, Bill
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