Tuning I cannot recall seeing this before

[bigHUN]

Yesterday afternoon about 5pm I toke my gear and headed out to my gun club for some 100 M fun with my MK2.
About 32-34C and the air was "thick" already and soon enough a rain started just sipping, not heavy to soak but enough to feel more comfortable shooting out of shed.
After maybe a hundred shot I noticed a white "smoke" started coming out from muzzle and the eaglevision airstripper.
I am tethering from a larger 147cc scba tank...First thought that I was not careful enough last time couple days ago refilling the bottle for tethering and maybe the YH water separator let a larger amount of moisture to the tank. (I have the orange dual towers, btw, and for years these were working flawless). Last week I had an oring bust on that tank valve and I empty the tank for service and top it up again from bare zero... It was a bit longer work party and maybe me did a mistake?
To make sure an hour ago I went to a garage, removed the bottle from the bag and place it in a big bin holding it vertically, if any water inside to sit close to the valve.
Minutes ago I opened the tank valve for tests, and no white vapor is coming out with the released HPA. So that is off the hook.
How to call this phenomena?

 

[Gerry52]

I believe it was the HP air condensing as it left the barrel into the atmosphere. NOT an indication of moisture INSIDE your equipment. I've seen this barrel "smoke" phenomenon before a few times.

 

[Airgunmann]

I've seen it once before to and didn't know what to think thought I had water introduced but it is pretty humid here so I wrote it off

 

[Vetmx]

I was shooting my DRS classic the other morning and noticed the same thing. Air was thick with humidity and my gun came from my A/C house. Never thought about it again until I saw this topic. I fill my tank with an Alkin so I don’t have moisture issues. I think it’s just two kinds of air colliding under the right circumstance.

 

[Vetmx]

Oh, and I don’t recall seeing it before either, in the daytime. At night with NV, yes.

 

[Ezana4CE]

I was shooting my DRS classic the other morning and noticed the same thing. Air was thick with humidity and my gun came from my A/C house. Never thought about it again until I saw this topic. I fill my tank with an Alkin so I don’t have moisture issues. I think it’s just two kinds of air colliding under the right circumstance.

I went through a similar thing last week shooting my Bulldog. I thought maybe I was wasting air or something. High temps and humidity around here. I thought I’d left the gun and SCBA outside long enough for the air temp inside of the tank and reservoir to rise. Maybe I didn’t. No big deal. I didn’t feel and moisture on my fingers around the bleed valve on the SCBA tank.

 

[Scotty1]

I’ve had that a lot while shooting in the rain, from my garage. Eventually the bottle and barrel will be dripping with condensation if I keep shooting. I‘ve bled down a 500cc bottle before, and it will be soaking wet when empty. High humidity and a temp differential.

 

[KatoKevin454]

High pressure gas going to a low pressure gas will collect moisture, the low pressure gas is cold and will cause condensation of any moisture in the air, that is how Refrigeration works...... I'm a retired HVACR technician....

 

[bigHUN]

The AC.... I am storing my guns down in the basement between sessions, there is my mans cave.
From door to door distance is about 15 minutes and my gun cases are well padded with closed foam layers, this a good thermal protection as well.
I remember now when I was setting up the gun at the bench the parts and bits pieces were cold on touch.
I didn't even season my scope just started shooting and minutes later when the rain started sipping a lot of humid not much air to bread neither, probably well above 95%.