PMC headstamp question

[SixPointEight]

I spent a while on google and can't seem to find an answer.

I couldn't sleep last night so I was sorting brass. I noticed I have PMC 223 with two different headstamps. Some with larger font, and a lot with a smaller font. Is there a difference between them? Age? Factory? Bronze vs Gold?

[Boots]

I have the same mix of ammo. Take a close look and check to see if one variation where the "M" looks like an upside down "W".

PMC = Eldorado Cartridge Corporation (previously Patton and Morgan Corp., and Pan Metal Corp. ) PO Box 62508, Boulder City, NV 89006. The PMC headstamped ammunition for ECC has been made in Korea, the Philippines, Mexico and the Repuclic of South Africa.


PMC = Poongsan Metal Manufacturing Company Ltd., Seoul, Republic of Korea (probably at the Angang Ammunition Plant). Note that the "M" is shaped like an upside "W"

[SixPointEight]

I cant really say one looks looks like a W and the other an M. They look quite similar. Just one looks like 223REM on the bottom, and the other is 223 REM

Picture:


Hope that helps. I took it through photoshop to try and clear it up, if you need a better pic and have hints for how I should take it lmk

[Boots]

Also another good "visual" source...

http://www.afte.org/ExamResources/gallery2/v/Headstamp-Gallery/

[Boots]

I cant really say one looks looks like a W and the other an M. They look quite similar. Just one looks like 223REM on the bottom, and the other is 223 REM

I would say they are the same... just weight the cases to see if one is heavier than the other. (military or civilian)
I'm also scouring the net... but haven't found anything specific to the stamp sizes. I can only think that it could be the difference of them being manufactured in different plants.

[Gowking]

I have noticed that there is crimped and non crimped primer pocket PMC 223 brass in my inventory.

-G

[rromeo]

PMC = Poongsan Metal Manufacturing Company Ltd., Seoul, Republic of Korea (probably at the Angang Ammunition Plant). Note that the "M" is shaped like an upside "W"

I did a double take.

[Boots]

I cant really say one looks looks like a W and the other an M. They look quite similar. Just one looks like 223REM on the bottom, and the other is 223 REM

Picture:


Hope that helps. I took it through photoshop to try and clear it up, if you need a better pic and have hints for how I should take it lmk

Well... those definitely look like civilian brass because of the rounded edges (not crimped) and the M does look like the upside down W. (the legs would be straight down, not angled like your examples)

I just looked at my PMC brass... and they look exactly like yours. I also have the same spacing and non spaced REM223 stamp. I know for a fact that my brass came from one of two bricks (cases of 1000) so my assumption is that they came from different plants or production runs and that they were imported as opposed to the ammunition made out of their Nevada plant.

[SixPointEight]

I have noticed that there is crimped and non crimped primer pocket PMC 223 brass in my inventory.

-G

I also have small-font crimped primers. I'll pull a few examples of all 3 and get some case-weights

EDIT:
Average weight of 5cases
Crimped PMC: 93.04gr
Little font PMC: 92.96gr
Big font PMC: 92.34gr

.6gr difference between Little and Big writing. Less than .1gr between PMC crimp and regular.

[Boots]

You should have weights between .210 and .217 oz. That's what I got spanning all the variations.

[SixPointEight]

Ounces? don't have a scale that reads in grains? I believe .6gr is close enough together to be considered the same. So Ill probably lump it all together, keep all the other stuff that i dont have much of into a "random" pile, and use it for reduced loads. I found a good amount of r-p brass, sorted by weight so i have a few piles of "match sorted" brass. Dont really need it for a 16" ar! lol

[Boots]

yeah... I could have measured it in grains... but didn't use my powder scale to measure them. I used my jewelers scale and it was already set at ounces... or was that grams? Damn! lol

[SixPointEight]

If it's .2XX it's gotta be ounces

[Boots]

yeah, ounces it was.