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Rifle Barrel anti corrison tubes
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09-27-2009 05:23 PM
# ADS
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I'm a gun collector and a metallurgical engineer (1974). I specialize in other kind of engineering today, corrosion and chemical cleaning. Reading you question, you sound much more expert in firearms that I can pretend to be, but I will suggest this: the pressed paper material you are describing, may have been impregnated with "vapor phase corrosion inhibitor". Search these words verbatim in Google and you will get a trolley of articles.
But I would not rush out and spend money on fancy exotic chemicals, given that a simple thin layer of oil will do the job. I have a 1899 Mauser Oberndorf (6,5x55mm): no rust inside the barrel. I have kept another Mauser in the gun safe for 20 years : no corrosion. The house has been humid at times and I must confess I may have been neglecting my puppies for long periods of time over the years. The gun safes are now in the basement (no improvement there).
I shoot, clean with G96 gun treatment, patch till clean, and lube with one last patch slightly soaked in motor oil, any kind. Motor oils have a strong anti-oxidation additive and are very sticky on metal surfaces. Iron need oxygen (air) and water (humidity) to rust. The thin oil film isolates the iron from the two later: hence no corrosion possible. Simple, cheap, effective. Why do you thinks cosmoline is so popular for gun preservation? But that product is much more adherent and will require a solvent (varsol) for proper removal.
Back at the range, I run a tight patch through the bore again before firing, in case dust stuck to the oil. And bang she goes. (I any case I have discipline my self to always look through the bore before shooting any firearm.)
The kiss principle, "keep it simple stupid".
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Thanks for the post, it never dawned on me that they would be vapor inhibitors in their own right.