Barrel coolers

Oh nice, that would be pretty cool indeed.

Edit: I remembered in time to resize it first as it was shot from a different rifle and didn’t want it getting stuck hehe
 
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At the BC precision rifle championship several years ago, it was really hot and some of the guys put wet hotel towels on their rifles. I don't think this was a great idea but they thought it would help.
 
Would a whole case be ideal, or would it be better to be blowing air over the whole chamber too?

Or would a brass case increase cooling due to its relatively high conductivity? Hmmmm...
 
Buck1950 said:
RJ et al - The advert says to only run for 15-min. Does yours run longer or just in 10-15-min sets 'when you need it' ?
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It quotes 10 minutes it seems.

Screenshot 2025-08-23 at 09.16.25.png

Thinking out loud there is a big difference between using it to pump up a mattress or similar (ie ever increasing back pressure making it work harder vs pumping up an open barrel thats vented to atmosphere and doing a fraction of the work)
 
On a side note I just picked up an M18 Milwaukee fan and took it to the range with me yesterday.

I put 20 rounds through my 223 and put it on the side to cool while I shot another rifle. It was probably 30 degrees yesterday and when I went back to grab it it was still pretty warm. Then I remembered I had the fan so I brought it in and got it blowing on the rifle (rifle on rack, bolt open and fan below with airflow directed up into the chamber and over the barrel.

5 or 10 minutes later and it was much cooler. Worked very well.
 
Sniffer said:
It quotes 10 minutes it seems.

View attachment 999553

Thinking out loud there is a big difference between using it to pump up a mattress or similar (ie ever increasing back pressure making it work harder vs pumping up an open barrel thats vented to atmosphere and doing a fraction of the work)
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It does shut off after its run time I feel the barrel and if not Kool enough I just restart it.
I THINK 🤔 its way better to blow air through and Kool a barrel from the inside then the outside 👍
 
remington jim said:
It does shut off after its run time I feel the barrel and if not Kool enough I just restart it.
I THINK 🤔 its way better to blow air through and Kool a barrel from the inside then the outside 👍
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Interesting, so it runs for 10 minutes and then stops automatically.

How loud are these little pumps? Trying to avoid noisy, even the fan I took yesterday (which is fairly quiet) was loud enough that it affected my ability to hear my 22LR hitting the steel gongs at 300M. First world problems I know....... :D
 
Sniffer said:
I have a similar looking Milwaukee blower, maybe I will repurpose that and test.

It might be on the noisy side. Would prefer it wasn't noisy.
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It's definitely on the noisy side but on a 30c day I need to cool down every 5 rounds and without air cooling it takes 30 min upright with the bolt open. On a positive note. If you wear nose cancelling earpro it is less abnoxius than the high pitched sound of the magnetospeed but with 20 times the airflow.
 
I made one of these 15 years ago using a battery operated live well airrator and some surgical tubing. I think I had all of $25.00 invested. There's no rocket science here, but the system works better if the rifle is racked and the muzzle is straight up instead of it pointing down range like say on a bench. You could probably do it for cheaper now with shopping on Amazon for the parts.
 
If you have a 3D printer, this one is easy to make and uses a cheap USB fan

https://www.thingiverse.com/thing:5351868

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The fan is $15 on Amazon

https://www.amazon.ca/Wathai-Turbin...5mm+x+30mm+usb+cooler+fan,aps,661&sr=8-4&th=1
 
 
rifleman338 said:
I made one of these 15 years ago using a battery operated live well airrator and some surgical tubing. I think I had all of $25.00 invested. There's no rocket science here, but the system works better if the rifle is racked and the muzzle is straight up instead of it pointing down range like say on a bench. You could probably do it for cheaper now with shopping on Amazon for the parts.
Click to expand...
Post # 8 👍
 
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