This may be a really stupid question but here it goes anyway:

You know that air-in a can stuff you use for dusting off keyboards etc- what about using that to cool a barrel?

You could put the little hose attachment on the tip, point it right into the breach and blow compressed air through the barrel, the air will cool the breach, and the stuff comes out pretty cool too.

Under normal conditions your barrel wont get hot enogh, and the air doesn't come out cold enough to affect the metal.

Seems like it might help while out shooting prairie dogs etc.

Thoughts?