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-   -   Noncorrosive Chart (http://forums.thecmp.org/showthread.php?t=5821)

battlerattlem1 06-02-2010 12:02 AM

Tw non corrosive m2 ball
 
About 2 years ago, I had a chance purchase 2000 rounds of M2 ball ammo with a TW 51 headstamp.
It was represented as corrosive primed by the seller, who was a local "expert". I got on this forum and discovered that Twin Cities was one of the first if not the first govt. ammo producer to go to non corrosive primers, December of 1950. Needless to say, I ran right back and let the seller try to convince me that I didn't want that old corrosive ammo, that he was selling for about one half the normal cost of M2 ball. I still have about 500 rounds and experimenting has shown that it groups about one half the size of the groups with HXP. At least with my ratty old correct grade HRA.
And some people say these forums are not helpful.
Bull puckey.

.22shooter 02-14-2011 07:27 PM

So if a can of ammo has a lot number higher than the one listed for that manufacturer it is non-corrosive?

Example: SL 9420 non corrosive on the chart. Is SL 9779 non corrosive then?

Craftsman 02-14-2011 11:30 PM

Quote:

Originally Posted by bsrman36 (Post 286104)
So if a can of ammo has a lot number higher than the one listed for that manufacturer it is non-corrosive?

Example: SL 9420 non corrosive on the chart. Is SL 9779 non corrosive then?

Yes.

saltydog452 07-17-2011 10:12 AM

Cans can be swaped about, headstamps remain.

Rookie asking, if I read it right, any domestic M2 '06 ammo with a post 1945 headstamp is non-corrossive?

What about foreign headstamps? Buyer beware?

EDIT: Just read the brief refering to Korean and Canadian mfgr, how about Greek, or...?

Thanks,

salty

dfancysr 07-21-2011 09:29 AM

Domestic M2 ammo with headstamps after 1953 can be assumed to be non corrosive. the crossover dates are in the chart on page 1.

gamblelane 07-26-2011 07:40 PM

FN Herstal 1955
 
I was just given 300 rds of 30-06 in boxes marked "cartuchos" but they are made 1955 in Belgium. Are they corrosive primed?

glassmountains 07-28-2011 09:46 AM

It's a safe bet that they are. The Europeans did not switch to non-corrosive primers until the late 50's early 60's.

GunZila 08-04-2011 08:16 PM

thanks for sharing !

Parker1942 10-14-2011 08:41 AM

Is there a sure fire (no pun intended) way to test whether ammo is corrosive or non-corrosive? I have been shooting KA-73 through a Garand and assumed it was non-corrosive. Thanks

LeadSpitter 12-02-2011 05:45 AM

Quote:

Originally Posted by Moops (Post 117711)
I liked this small article and chart about corrosive ammo.
http://www.ashlandlakegunclub.org/do...rimerRedux.pdf



Sadly they didn't cover or list the ammo made at or that came from NAMMO. :(


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