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I have heard the carbon wrapped barrels will extend shooting for at least double the amount of rounds before needing to be cooled down.

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I have a friend in town who produced a nice little chamber insert that employs a miniature ducted fan - it's a chamber and barrel cooling device. It works.

https://www.chamberchiller.com/

He competes with the crew out at our regional shooting facility.
These have been popular.

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That's a really cool idea...

Would be great to take along on a prairie dog shoot..

Ripp