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Posted: 6/3/2009 2:59:40 AM EDT
| How far down do I have to strip my AR in 7.62x39 to clean it when shooting corr. ammo?Any pointers? |
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Quoted: Quoted: ..... How sure are you your ammo is corrosive? Most 7.62x39mm around now isn't corrosive. i just bought some 7.62x39 made in hungary, i found out it is corrisive when it put it through the ak an didn't clean till a couple days later  That's a nice surprise....  I've only seen 7.62x39mm corrosive once in the past.... 4 years? It was a huge case of Yugoslavian... It isn't as common as it once was. |
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I would love to know what to do with corrosive AR ammo as well. I have an upper in 5.45x39, and despite all my efforts I can't keep it from rusting. I've read countless threads on cleaning corrosive ammo, so my procedure is this:
After shooting, spray down all parts and bore with windex/water solution, let drip dry and load up for home. Once home, I clean it as soon as possible (it's never been more than 3 hours). I take it apart and detail clean everything I can get to, using all manner of cleaners. It usually takes an hour or more trying to scrub every nook and cranny. When done, I spray or wipe every single component with Rem Oil or CLP (yes I know this might be overkill but I'm more concerned about stopping rust than saving oil), then put it into my safe which is equipped with a goldenrod dehumidifier. Despite all this, the chamber has a number of large discolored patches in it which looks like corrosion forming, the bore is less than perfect, the gas key is rusting at the elbow, portions of the bolt carrier sleeve are showing discoloration as well, and the inside of my flash hider is rusted along with possibly the crown(!). I'm at my wit's end; I'm tired of spending an hour plus on a single gun after a long day at the range (to say nothing of any other guns I might have to clean), and having the stupid thing start to rust anyway. I've heard some say that shooting a few rounds of non-corrosive ammo at the end of a range session can help, but other than that I am out of ideas. |
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Don't want to be ugly about your issue but the AR was designed from the ground up as a system using non corrosive ammo and you are getting what I expected when I first heard of the comblock chamberings for the rifle. The AK was designed to continue to operate in spite of the ammo used by hard chrome on most inside parts and using big chunky parts that are easier to clean.
I would only suggest keep doing what you are doing and shoot it while it last. |
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Quoted:
I would love to know what to do with corrosive AR ammo as well. I have an upper in 5.45x39, and despite all my efforts I can't keep it from rusting. I've read countless threads on cleaning corrosive ammo, so my procedure is this: After shooting, spray down all parts and bore with windex/water solution, let drip dry and load up for home. Once home, I clean it as soon as possible (it's never been more than 3 hours). I take it apart and detail clean everything I can get to, using all manner of cleaners. It usually takes an hour or more trying to scrub every nook and cranny. When done, I spray or wipe every single component with Rem Oil or CLP (yes I know this might be overkill but I'm more concerned about stopping rust than saving oil), then put it into my safe which is equipped with a goldenrod dehumidifier. Despite all this, the chamber has a number of large discolored patches in it which looks like corrosion forming, the bore is less than perfect, the gas key is rusting at the elbow, portions of the bolt carrier sleeve are showing discoloration as well, and the inside of my flash hider is rusted along with possibly the crown(!). I'm at my wit's end; I'm tired of spending an hour plus on a single gun after a long day at the range (to say nothing of any other guns I might have to clean), and having the stupid thing start to rust anyway. I've heard some say that shooting a few rounds of non-corrosive ammo at the end of a range session can help, but other than that I am out of ideas. The Windex does noting except add the moisture needed to cause rust to form. Hoppes No. 9 is formulated for cleaning corrosive military ammunition. Hoppe's No. 9 MSDS .pdf Kerosene (General cleaning agent/solvent) Ethyl alcohol (General cleaning agent/solvent) Xylene (Solvent, dissolves led) Amyl Acetate (Source of the famous smell) Ammonium Carbonate (Solvent, neutralizes corrosive salts and dissolves copper) Citronella (Perfumery agent and bug repellent) In use since 1903. |
| Why all the super duper grandpas cleaning methods for simple cleaning of corrosive ammo? It just leaves a type of salt residue. Rinse it out with hot water, boiling preferably. Use a lot of water at the range, followed by a lot of something like WD-40 to flush out the water. Then degrease at home, followed by a normal cleaning with Hoppes, Hopped Elite, or M-Pro 7, then oil with whatever, a CLP is probably best. Then possibly do a light cleaning again the next day, and if you want, one more the third day. |
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