Ammo fouling.

[castile]

Every time I clean my gun from the range I get a thin bit of oil here and there and sometimes when I remove the round out of the chamber to shoot it again [defense round] I see a bit of oil on the rear of the case or around the bullet to case. I have had it foul the cart. before. I try to change out the rounds in the mag once a years with new ones. Anyone else have this issue?

 

[Skylerbone]

Anything I use for defense gets practice time on the regular including shooting whatever is currently in the magazine. A bit of oil won’t hurt a thing.

 

[243winxb]

SAAMI- "Primers exposed to water or any organic solvent,
such as paint thinner, gasoline, kerosene, oil, grease, etc.
may deteriorate, resulting in misfires or poor ignition."

Primers are very hard to kill, but its been done with a spray.

 

[Slamfire]

SAAMI- "Primers exposed to water or any organic solvent,
such as paint thinner, gasoline, kerosene, oil, grease, etc.
may deteriorate, resulting in misfires or poor ignition."

Primers are very hard to kill, but its been done with a spray.

A primer duding test on another web site showed that it is hard to get a primer to dud. Firstly the shellac covering (might be something else) has to be removed. Solvents that dissolve shellac are not good at dissolving primer cake. Water appears to be good in dissolving primer cake.

I think oil migration into the powder is probably a greater risk than oil getting in around the primer. I used to take fingernail polish and paint that around primers, sealing the gap between case and primer. Never had a problem with or without fingernail polish on factory ammunition. It all goes bang. I tend to over oil and my carry pistols have oily chambers and to date, all rounds have gone bang when I shoot them up. I don't know if I am lucky or not, but I make sure to shoot up carry ammunition in a couple of years. The stuff gets hot in the vehicle and gets bounced around, none of this is good for gunpowder.

 

[bangswitch]

I think if you're worried about oil getting into your cartridges while stored in a magazine or while running through your gun, you have waaaaaaaaay too much oil in your magazines and gun. My philosophy when oiling a gun is to use two drops on a rag, and oil the gun with the rag. A little oil goes a long, long way. I shoot reloads almost exclusively, don't seal the primer or the bullet, never had issues with oil incursion, or rusted guns.

 

[Dibbs]

Don't worry about the toilet paper, get a couple boxes of Q-Tips. Just cheapo generics, nothing fancy. It sounds like you may be
applying far too much oil to your firearms. Solvent soaked Q-Tips are also great for cleaning, but try this:

Take a Q-Tip, soak the end in oil, (one or two drops should do it) then start wiping it onto areas on the firearm you want to lubricate, and
see how long it lasts. You may be surprised. And I'm betting you will use a lot less oil.