Help with safe moisture.

[Cpt_Impossible]

Not sure if this is the correct section to post this in, so feel free to move.

I have a stack on handgun safe that I only keep 2 handguns and a few extra magazines in. The ammunition in the magazines keeps getting dark green corrosion that feels like grease to the touch. The problem has been mostly with Federal HST rounds. I don't even keep the bulk ammo in the safe.

I put a metal silica packet with the blue to pink window inside to cure the problem, but It only goes about 5 days between baking before turning pink.

The safe is in an indoor closet, we keep the heat at 69* 24/7/365. Nothing else in the closet seems to have any problems. I had been keeping a leather IWB holster inside the safe but stopped that and still have problems. I was using Hoppes #9, oil, tetra gun grease, and a silicone wipe on my handguns but thinking the wet (generously oily) condition might be causing problems I switched to just Ballistol and a silicone wipe with a touch of tetra on the high friction surfaces.

I don't see any reason for the moisture problems in such a small safe in a heated room and really don't want to run a goldenrod or something for 2 handguns.

Any ideas?

 

[rcmodel]

Hoppes #9 is a mild copper solvent and will turn brass green if left on ammo.

If in fact there is a moisture problem, it is caused by temperture swings inside the closet.
If the back wall is an outside house wall, it is getting cold at night, then warming up in the daytime, causing condensation.

Do your windows steam over?
If so, the humidity in your house is way higher then it should be.
If you have a humidifier on your furnace, check the setting on the humidistat.

It could be set too high for colder weather when the furnace runs more.

rc

 

[Cpt_Impossible]

Don't have a humidifier. All closet walls are against other interior rooms. Windows never fog over. House is in the NW and was built in 2006, so it is really well insulated. All glass is double pane. Temperature inside is never outside of 69-72*