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Old 06-28-2020, 09:26 PM   #1
Night Owl
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Default Long Term Gun Storage Rust Prevention

I’ve got a few guns that I want to put away for a few years and not have to worry about rust forming on them. I’m about to buy some cosmoline and do it the old school way.

I’m assuming that this is still the gold standard in long term gun storage?

Here’s the cosmoline i’m eyeballing at the moment.

Any suggestions or other ideas?

https://www.cosmolinedirect.com/mil-...1796c-class-3/
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Old 06-28-2020, 10:23 PM   #2
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Are you planning on putting it in a safe?

Will it be in air conditioning?

San Antonio can vary from floods too incredibly hot so what kind of conditions do you need to protect against? Will they be in the house or in the garage? Storage facility?
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Old 06-28-2020, 10:39 PM   #3
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I bought a ton of these in all sizes...work great.

https://www.zerustproducts.com/produ...-storage-bags/
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Old 06-28-2020, 10:52 PM   #4
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Quote:
Originally Posted by Renov8 View Post
I bought a ton of these in all sizes...work great.

https://www.zerustproducts.com/produ...-storage-bags/
I've used their products as well with great results.
Not just for gun but also used for some knives as well.
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Old 06-28-2020, 11:10 PM   #5
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Quote:
Originally Posted by Big_Red_Rocket View Post
Are you planning on putting it in a safe?

Will it be in air conditioning?

San Antonio can vary from floods too incredibly hot so what kind of conditions do you need to protect against? Will they be in the house or in the garage? Storage facility?
No a/c and no worry about rain. That’s all i’ll say on that matter.
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Last edited by Night Owl; 06-28-2020 at 11:29 PM.
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Old 06-28-2020, 11:13 PM   #6
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Quote:
Originally Posted by Renov8 View Post
I bought a ton of these in all sizes...work great.

https://www.zerustproducts.com/produ...-storage-bags/
That looks good but iím looking for longer than max 5yr storage capability.
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Old 06-29-2020, 12:56 AM   #7
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Quote:
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No a/c and no worry about rain. Thatís all iíll say on that matter.
Coat of grease (easier to remove than cosmoline) on rifle before slipped into a plastic bag. Then throw a few desiccant bags into the PVC tube before you seal it up.
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Old 06-29-2020, 01:29 AM   #8
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This stuff really works.

https://www.brownells.com/gun-cleani...-prod1124.aspx



Best advice you are going to get from this website.
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Old 06-29-2020, 07:09 AM   #9
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What ever you use have the storage place where the temp doesn't go up and down getting moisture going in and out from air expanding and shrinking. A 4 degree difference between temperature and dew point gets water droplets to form. Concrete floors in winter can transfer cold into cases so have insulation under things.
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Old 06-29-2020, 08:25 AM   #10
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ZEP IRONCLAD metal preservative and a vacuum bag ...and don't look back.

I stored several new MGs for 7 years in the safe using it and they were perfect.

It's not messy like cosmoline, cleans off easily with mineral spirits, forms a coating that is like a light paraffin.
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Old 06-29-2020, 09:38 AM   #11
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Quote:
Originally Posted by tommygun2000 View Post
ZEP IRONCLAD metal preservative and a vacuum bag ...and don't look back.

I stored several new MGs for 7 years in the safe using it and they were perfect.

It's not messy like cosmoline, cleans off easily with mineral spirits, forms a coating that is like a light paraffin.

Is it safe for wood furniture?
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Old 06-29-2020, 08:21 PM   #12
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Quote:
Originally Posted by Night Owl View Post
That looks good but i’m looking for longer than max 5yr storage capability.
When Heritage Packaging was still the 'owner' of the velcro VCI bags, Jason Tuccio informed me that, if the bag was opened only 1-2 times per year, they would last at least 10 years. Maybe when it got converted to "BluGuard", maybe they have changed their bags -- I am not sure....
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Old 06-29-2020, 09:58 PM   #13
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Gun grease and then a VCI bag. If you wanted to go nuts you could do grease>VCI>sealed PVC, but that is overkill IMO.
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Old 06-29-2020, 10:04 PM   #14
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Golden rod in the safe, cover them in g96, don’t have them stored in an attic or in a garage, you’re good to go. If they consistently are in ~50% humidity and ~70 degrees, and you aren’t touching them, they aren’t gonna rust.
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Old 06-29-2020, 10:11 PM   #15
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Fluid Film


I fucking HATE rust
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Old 06-30-2020, 12:28 AM   #16
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There is an industrial strength spray on grease made by CRC or similar that we've recommended in the past. This same question comes up very often.
Shooter's Choice Rust Prevent will easily last 5 years when applied correctly. Just like waxing your vehicle.
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Old 06-30-2020, 05:38 AM   #17
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have you considered storing them in mylar bags with a dessicant and an oxygen absorber dropping in there before vacuum sealing the bag? Do it the same way you would for long term food storage.
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Old 06-30-2020, 09:20 AM   #18
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Quote:
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Is it safe for wood furniture?
I don't know if it would affect wood, all the MGs had plastic furniture. It didn't affect the plastic.
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Old 06-30-2020, 08:30 PM   #19
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Fluidfilm ftw.
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Old 06-30-2020, 09:36 PM   #20
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Temperature stability is the key.. I store several tons of bare steel sheet without rust being an issue. Keep the humidity under 50% and the fluctuations minimal and a slight coating of almost any oil will keep rust at bay.

The VCI products are also very good if you don't want to clean preservative off. Normally they are good for 5 years or if not opened and kept cool and stable they are good for 10 years.. I use them on seldom used tooling, and it works. A single sheet of the VCI paper laid flat on a sheet of metal left outside under cover for a month will leave a square of shiny metal with rust around it.. The paper can leave a odd color residue on blued or nitrided finishes, the bags are slightly better for not doing that. It eventually fades but can cause issues on collectables.
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Old 07-01-2020, 03:41 AM   #21
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Super Tech General Purpose Grease

^^^^^ This is all you need. You are putting too much thought into this. I think you can get tubes of this for like $2 per tube. Much cheaper than cosmo and it will last a long-ass time.
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Old 07-01-2020, 07:19 PM   #22
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Lots of great ideas and info in this thread. Thanks fellas!
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