Will silicone spray damage primers

F

FUD

Moderator
I was advised in another trend that it is not a good idea to unchamber a round from my CCW pistol every evening when I put it away for the night because it might cause the bullet to be pushed back in the case and in some calibers that might raise the internal pressure to dangerous levels.

However, living in the hot & humid Florida swamps, rust is a serious problem and I've been spraying the gun with Silicone Spray (Petroleum Distillates {8052-41-3}, Mineral Oil {64742-53-6/64742-52-5}, Silicone {63148-62-9}, 2 Butoxy Ethanol {111-76-2}, Carbon Dioxide {124-38-9}) for added protection and wiping it down before putting it away.

With a bullet in the chamber, will doing this have a negative effect on the round causing it not to fire?

Share what you know, learn what you don't -- FUD
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Anyone can correct me if I'm wrong, but wouldn't the bullet be spaced farther out of the case from repeated chamberings (slammed into chamber, bullet momentum greater than case, etc...)?

Also, if it's waterproof (as much as anything can be), why would silicone hurt it any more than WD-40 or others?
 
It’s more a factor of the bullet’s inertia rather than it’s momentum. Without a tight crimp (and sometimes with it) the slide “whacking” the rear of the case (not much mass) can cause the case to creep up on the bullet which has considerably more mass than the case. Also the cartridge (bullet) often impacts the feed ramp on the way in (if you’re feeding from the magazine as is usually recommended) and that will absorb some of the energy from the bullet’s momentum – while the slide continues to exert force on the case.

Unless specifically treated to be waterproof , no ammunition exposed to water should be considered reliable. This goes double for penetrating solutions such as WD-40 or any of the silicon sprays. Spraying the empty gun and then wiping the excess off (or letting it dry) before reloading should present no problems.


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Jim Fox
 
Try useing some of that primer sealer on the primer and around the bullet and case lip. I can not think of the name of it right now.
 
I used to seal the primers on my carry ammo, when I was driving a police car for a living, with finger nail polish or metal model paint. Stand the ammo in the box, primer up, apply the polish (in the color of your choice, never mind the looks when you buy the stuff and don't use your wife's or girlfriend's favorite off the night stand), let it start to dry, wipe off the excess and let it dry all the way. You are in business, water and oils stay out of the primers and they all work when you want them to.

If you worry about repeated chamberings of the ammo in your CCW pistol, I assume it is a semi-auto: unload the chamber, unload the magazine and line up the cartridges so you know where the rounds were in the magazine, place the round from teh chamber in teh magazine first and then the one that was on the bottom, etc until the round that was on top is now not in tha magazine. Load that round in the chamber the next am and the problem is solved. Each round is chambered 4 times in a month and the wer and tear on the ammo is much less. Or you could avoid the unlaoding and rechambering bit and leave the psitol loaded. Just put it in a lock box.

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Ne Conjuge Nobiscum
"If there be treachery, let there be jehad!"
 
Echoing Hardball's comment: WD-40 DEFINITELY kills unprotected primers! On one occasion, I saw it kill 5 out of 5 overnite! ( new, fresh super-vel 38spl. Sealing with nail polish should help, but run a test series before trusting your life to it! crankshaft
 
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