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Ideal temperature and humidity for storing firearms

Posted on 5/26/15 at 3:30 pm
Posted by weagle99
Member since Nov 2011
35893 posts
Posted on 5/26/15 at 3:30 pm
With summer almost here this could be useful. Per the National Firearms Museum the ideal environment for long term storage is 70deg F, 50% RH. It is important to keep temp constant if possible. Too much humidity = rust, too dry = wood starts cracking

This digital hygrometer is a good tool for monitoring your space:

LINK

You might surprised at the conditions in your safe.
Posted by DownSouthDave
Beau, Bro, Baw
Member since Jan 2013
7368 posts
Posted on 5/26/15 at 3:35 pm to
I wonder how you correct humidity? Maybe put a little cup of water in there? I have a dehumidifier in mine, like I would imagine most do. I would have to think that it's drier than a bucket of sand in there.
Posted by dawg23
Baton Rouge, La
Member since Jul 2011
5065 posts
Posted on 5/26/15 at 4:02 pm to
quote:

I would have to think that it's drier than a bucket of sand in there.
Any time the relative humidity stays below 34% for 6 hours or longer, the plastic frames on Glocks start warping.

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Not

Posted by Clames
Member since Oct 2010
16560 posts
Posted on 5/26/15 at 4:02 pm to
quote:

You might surprised at the conditions in your safe.


Nope, I've fitted mine with mini-dehumidifier, two large VCI packs, and a have a digital hygrometer that isn't one of those crappy ones suitable for cigars...
Posted by Clames
Member since Oct 2010
16560 posts
Posted on 5/26/15 at 4:24 pm to
Can maintain 50% RH @ 70F with a PG/DW solution that is 80.5/19.5 ratio. Unless your safe is airtight and you have a very effective desiccant you aren't going to see low RH unless you live in the desert.
This post was edited on 5/26/15 at 4:29 pm
Posted by weagle99
Member since Nov 2011
35893 posts
Posted on 5/26/15 at 5:18 pm to
RH can drop fairly low in the winter in a house with gas heat in my experience.
Posted by Clames
Member since Oct 2010
16560 posts
Posted on 5/26/15 at 5:55 pm to
Saw about 55% RH up here with single digit temps and gas and kerosene heat.
Posted by weagle99
Member since Nov 2011
35893 posts
Posted on 5/26/15 at 6:03 pm to
Ok. You win.
Posted by Clames
Member since Oct 2010
16560 posts
Posted on 5/26/15 at 6:14 pm to
My safe is about 61% right now with the humidity controller about 50% until it needs a recharge. I think those that take a gun in from cold weather into a warm house and proceed to toss them in the safe need the extra stuff for moisture control. I've never had as much as flash rust with VCI's and no humidity control though.
Posted by weagle99
Member since Nov 2011
35893 posts
Posted on 5/26/15 at 6:56 pm to
I like the Golden Rod to keep the temps of guns inside the safe warmer and help avoid condensation. You are correct that bringing a cold gun into a warm house is a real concern, and many people don't think about the 'hidden' surfaces that can rust during such a dramatic temp change.
Posted by Clames
Member since Oct 2010
16560 posts
Posted on 5/26/15 at 7:07 pm to
Do you use a descant along with the heater?
Posted by weagle99
Member since Nov 2011
35893 posts
Posted on 5/26/15 at 10:20 pm to
If needed. Sometimes dessicant can get the RH a little too low during the winter.
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