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Long Range Hunting & Shooting
Proof Carbon Barrel Cooling
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<blockquote data-quote="JimmyCP" data-source="post: 1693756" data-attributes="member: 106166"><p>The big difference is the way he's using the CO2. I could see the concern if it was liquid but he's using in a gas state which realy isn't cold, it's cool.</p><p>Depending on how hot the amint air is, I bet it's not lower than 60F.</p><p>Due to the flow and heat transfer "hot to cold" it's acting like a mini air conditioner.</p><p>If he flipped the bottle and liquid was ran through it, he could over harden it causing it to become brittle. Just like heat treating stainless steel knives and giving the a soak in liquid nitrogen before they fully air harden at ambient temp.</p><p>Out here in the desert with no ranges, we all keep our trucks running with the ac going to throw our rifles in to cool down for load development.</p><p>Some of these guy have made jigs to run the ac air straight in the chamber. So with an average of a 22 degree split of inlet and outlet air, there shooting 52f air wich is colder than the co2 gas shooting out the top of his bottle.</p><p></p><p>I use a CO2 setup like his to blast out Air conditioning coils all the time. Comes out just as cold as what comes out of my air compressor.</p><p></p><p>If I was going to use this method, I would think about using dry nitrogen over CO2. CO2 pipelines get moisture content build up. Dry nitrogen absorbs moisture and removes it.</p><p>But that's all just my opinion being universal certified in gasses and a knife maker for 30 years.</p></blockquote><p></p>
[QUOTE="JimmyCP, post: 1693756, member: 106166"] The big difference is the way he's using the CO2. I could see the concern if it was liquid but he's using in a gas state which realy isn't cold, it's cool. Depending on how hot the amint air is, I bet it's not lower than 60F. Due to the flow and heat transfer "hot to cold" it's acting like a mini air conditioner. If he flipped the bottle and liquid was ran through it, he could over harden it causing it to become brittle. Just like heat treating stainless steel knives and giving the a soak in liquid nitrogen before they fully air harden at ambient temp. Out here in the desert with no ranges, we all keep our trucks running with the ac going to throw our rifles in to cool down for load development. Some of these guy have made jigs to run the ac air straight in the chamber. So with an average of a 22 degree split of inlet and outlet air, there shooting 52f air wich is colder than the co2 gas shooting out the top of his bottle. I use a CO2 setup like his to blast out Air conditioning coils all the time. Comes out just as cold as what comes out of my air compressor. If I was going to use this method, I would think about using dry nitrogen over CO2. CO2 pipelines get moisture content build up. Dry nitrogen absorbs moisture and removes it. But that's all just my opinion being universal certified in gasses and a knife maker for 30 years. [/QUOTE]
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