i have been thinking about barrel cooling, i have one of those small coolers that goes in the chamber area, takes long to cool and actually you are blowing the hottest area of the barrel towards the muzzle, i was experimenting with this type for the last few weeks and it works much faster than the small chamber types. it runs on 3 18650 batteries, going to try an see if the pic upload works. it slides over the muzzle very loose fit, this way it blows air thru the bore and over the the outside of the barrel. works slick
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[IMG]C:\Users\User\Desktop\cooler[/IMG]
