Has this happened to you? - ammo corrosion

[Suck My Glock]

Now MAC lives in Indiana, where it is much more humid than here, so perhaps this isn't a real problem in AZ. I know it hasn't been for me. But I'm kind of OCD about ammo, and always have more ammo cans than I need so I can keep stuff sealed up and secure from exposure.

But I haven't ever seen any sort of corrosion resistance test between polymer coated and lacquer coated ammo from the former COMBLOC. All I know is that the empty cases eventually turn rusty out on the range.

 

[Ballistic Therapy]

That's amazing.
Who would ever think steel would rust ?

 

[Suck My Glock]

Obviously steel cased ammo can rust.

I'm more interested in his claim that the lacquer coated ammo does not rust as readily.

I've never seen anyone do a study on that.

 

[xerts1191]

Whoa, looks like the fender wells of a 67 Pontiac with Ohio plates

 

[Ballistic Therapy]

Sure if you coat steel in lacquer it won't rust as long as it has been cleaned and dried before the coating.
But all it would take is a little pin hole or a small area to rub off on the lacquer and it will rust if any moister gets to the steel.
It would be the same principle as if you painted a piece of steel or powder coated it.
If the coating comes off it will rust.

I don't think lacquer coated ammo is coated as well as you would coat a normal piece of steel though.

 

[GunNut]

Wow stored in a humid environment
Who knew rust could form
Who did not know rust can form

As the saying goes
"Stupid people lose ammo only to buy during panic at 20x more"

 

[Crippledtrigger]

Obviously steel cased ammo can rust.

I'm more interested in his claim that the lacquer coated ammo does not rust as readily.

I've never seen anyone do a study on that.

I can throw a box of each in the garage and see over the next several months, if I can find it in stock. It's pretty humid here and i dont run an AC in the garage and swamp coolers just dont work as it just too humid. Avarage humidity is 55% with huge stretches much higher. But no matter how much they bitch, it's nothing compared to the high one teens to 120s.

I would think the poly would be fine unless scratched. That would be my thoughts to begin with.

 

[Pale Rider]

I can say from experience that the original Wolf green lacquered ammo will stand up to humidity way better than the cheaper gray painted ammo that they're selling now. I have quite a bit of the older stuff stored away and when I've checked it, it looks fine. The ammo that's painted with that cheap ass gray paint that I stored exactly like the other ammo always had indications that it's trying to rust, so I make sure and use extra desiccant when I store that ammo. I also just shoot the gray stuff first. The older stuff was just way better and most of it had the red lacquer paint to seal the bullet and primer from moisture. They stopped doing that quite awhile ago. The older stuff also had real copper jackets instead of the copper washed steel jackets that they are selling now. Like everything, they make more money going with cheaper production methods, so we have to watch out for that crap.

 

[samnev]

Never happened to me. But this is Arizona so it's not surprising it didn't. Haven't own any of this type of ammo in the last few years.

 

[792mauser]

Wow!
Moisture + steel = rust?

Say it ain't so.


But this is Arizona and we can hit LOW double digit humidity levels so there's that.
I've never seen that much corrosion.

 

[littleleft]

Arizona heat, destroys all containers, plastic and rubber seals. lost thousands of gun stuff when i thought the seal was good. Bullets can fix or shoot fast. other stuff need to refinish