How to know if this ammo is corrosive.

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13 years 2 months ago - 13 years 2 months ago #8788 by AR-Freak
How to know if this ammo is corrosive. was created by AR-Freak
got a newb question.

I bought some 7.62 nato rounds at a gun show and had some cartridges with the stamp PMJ 06 not PMC, does anyone know who makes this and is it corrosive? the LC 05 is lake city and some have gold primers and some with silver primers, how do i know whats corrosive? The seller said it was reloaded manufactured rounds. Any help would be appreciated. Thaanks


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Last edit: 13 years 2 months ago by mlotziii.

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13 years 2 months ago #8790 by BUILDING MY SASS
Replied by BUILDING MY SASS on topic Re: How to know if this ammo is corrosive.
Well my friend...First off...DON'T BUY RELOADED AMMO AT GUN SHOWS...UNLESS YOU KNOW THEM QUITE WELL....just my Humble Opinion mind you...
As for being Corrosive...odds are Not...that takes a Berdan Primer...and to de-prime them take a very special die...from what I have been told...but if you want to know...pull the bullet...dump the powder...and with a light..see if there are TWO little holes in the bottom...this would be Berdan Primed...but still Odds are Not...just clean your rifle real good after shooting them...mainly the barrel...and bolt....or shoot one...and pop the spent primer ...that would work two...I forget...DO YOU RELOAD....if not my Friend...Might give it some thought...would be glad to help you get started...
BMS

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13 years 1 month ago - 13 years 1 month ago #8796 by LebbenB
Replied by LebbenB on topic Re: How to know if this ammo is corrosive.

First off...DON'T BUY RELOADED AMMO AT GUN SHOWS...UNLESS YOU KNOW THEM QUITE WELL....

Truth.

A PMJ headstamp would indicate that the case is Korean, made by Poongsan Metals. It's also built to Lake City spec, so I would hazard a guess that the brass is boxer primed. As BMS said, break one open and check.

As far as cleaning after shooting corrosive ammo, I know some folks with Mosin-Nagants that shoot surplus (corrosive) 7.62x54R. Their technique is to soak a few patches in Windex glass cleaner and pass them through the bore prior to leaving the range. The ammonia in the Windex cleans out the mercury fulmanate from the bore and chamber, whereas a petroleum based cleaner will not. They also use glass cleaner to clean off the bolt face, then re-lube it and put it away til next time.
Last edit: 13 years 1 month ago by LebbenB. Reason: additional information and clarification

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