Anyone use nitrogen? or any nitrogen experts out there?

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T

thebuster

Member
Apr 4, 2015
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ohio
Just thought I'd throw that out there I've been using nitrogen for the last two years works real well gives me another 5 to 10 ft./s increase in velocity more stable? just curious how temperature will affect it?
My POI never really seems to change regardless of temp at least a range of 40-80F

I ask because at the PA Cup shooters we're scrambling to confirm There POI due to cold morning temps on the 2nd day
i just started the match without any practice and beat my first day score on day 2,but I also understand that scopes range different in colder weather and a POI may shift on some guns using air

I would like to here your thoughts ,Please explain!

Thank You! John B

 
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I use nitrogen in my guns and the ambient temperature does effect poi. My experience is from shooting my gun zeroed in 68 deg will be a mildot low at 70 yards at 25 degree or so. I only notice this in the winter. I would tend to agree with you that from 40-80 degrees I would not notice a difference. Our winters fluctuate so much in temperature I'm always adjusting elevation.
 
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I shoot pretty much exclusively with nitrogen, and the only thing I have noticed shooting Cricket bullpups (a .25 and a .22 cal) is that dropping temps reduces the pressure quite a bit. With the guns being regulated, I have not seen any noticeable POI shift as long as the gun is on the regulator. Granted, I'm not bench rest shooting most of the time, but rather hunting or "plinking", but I can ear hole a pig at 40 yards when it's 60 degrees out as easy as I can when it's 30 degrees, but I sure lose a lot of pressure in my CF tank when I fill in my shop, then take it outdoors...
 
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Sorry for the very late response. I was just looking at old posts and saw this one.
You really shouldn't see any difference between filling your gun with nitrogen or air. They are actually almost the same. Air is a mixture of 80% nitrogen and 20% oxygen. So, when you fill with air, your really putting 80% nitrogen in the gun.
Temperature will always affect the pressure inside a cylinder. As the temperature rises, the pressure will rise and vise versa.

As far as POI being affected by temperature, this is because the air the pellet travels through, is at different densities with different temperatures and humidity. The colder the air, the more dense (thick) it is. Think of it like shooting your pellet through water one day, then oil the next day, just not as a dramatic difference. Hope this helps a little.
 
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"T3PRanch"
"AlliInLL"How does one get started with nitrogen for a PCP?
Click to expand...
IN a nutshell. Welding supply store. Rent a 6K bottle. Buy a fill adapter (and regulator if desired) from Joe Brancato. Fill, Shoot.

Thurmond

Thurmond, Always like your replies, simple, direct and to the point. Very helpful for newbies like me.
Click to expand...
 
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