if it is not berdan primed I am thinking they just kept making them and switched over to boxer?

there were many reports of corrosive LC52

I have been looking for a box of Chinese made but  everyone is selling as USA

Lake City ammo has red primer sealant. the Chinese does not.

LC is stamped heavier.

if you look at the rim it should be a little different shaped.

The bullet has a different curve to it, but very hard to tell

every picture I have seen they were Berdan prime. Recently I heard claims of non corrosive Chinese LC52, If yours were not sealed, and not Berdan primed then that suggests a change

And now I am curious to see some LC52 COPY that was berdaned primed?

Seems like some good info and pictures here:

Carbine ammo question http://forums.thecmp.org/showthread.php?t=91809" rel="nofollow - https://forums.thecmp.org/showthread.php?t=91809

and some more here

http://forum.cartridgecollectors.org/t/yet-another-30-carbine-headstamp-questian/6181/11" rel="nofollow - https://forum.cartridgecollectors.org/t/yet-another-30-carbine-headstamp-questian/6181/11

where it is said that when compared side by side there are slight differences in the shape.

edit:

Charlie has saved a number of those photos full size here:

http://www.uscarbinecal30.com/forum/lc-72-case-marked_topic5182.html" rel="nofollow - http://www.uscarbinecal30.com/forum/lc-72-case-marked_topic5182.html

But mine with a different headstamp is boxer primed. I am lost

I'm seeing at several differences mentioned.

1. is the berdan primed.  Is this an absolute?  Im not sure.

2. is the powder and the bullet shape.  Well that's no help to you here.

3. is  if the sealant was clear - although not sure that's a help here but we're not seeing red residue.

4. is that the angle or chamfer of the casing where it joins the head is different.   So maybe a side by side comparison of your cases with a known cases will look different (if chinese) or not.

From Charlie's post, in this picture the neck where the extractor grabs looks longer.

I think what you and I were first looking at, the lettering may also be a clue.  That I'm not sure about, but its seems to me the L in the Chinese LC is a little cockeyed.

Neither L or the 5 on your shells look like the Chinese made L & 5 stamps in the photo above.  Look at how the bottom of the Chinese 5 is scrunched up.

http://forums.thecmp.org/showthread.php?t=40088" rel="nofollow - LC52 carbine ammo BERDAN!?!? - CMP Forums (thecmp.org)

Here is another page on the Chinese LC 52 which shows a cut away case with the berdan anvil

http://www.oldammo.com/march06.htm" rel="nofollow - https://www.oldammo.com/march06.htm

It might be better to take pictures of your cases on their sides and as straight on as possible to see if the case is shaped differently.

 

It is just baffling to me that neither of the cases marked LC52 are not berdan primed (only have one flash hole) and have different headstamps. I dont know what I should do with them, to be honest. 

If they are for sure not Berdan primed, I'd say shoot them. As Jond41403 said, maybe just a case of 2 different legit headstamps during that timeframe at Lake City. 

Back in ~1989 I bought a USGI green ammo box full of M1 Garand rounds all neatly packed in 8 round clips w/ the paper covering over them.  Headstamped "LC 62 MATCH".  Red primer sealant present.  Comparison of the headstamps on the Garand cartridges with those of Rebel's carbine cartridges reveals: 

1) Light stamping on Garand similar to that on the headstamp on left of Rebel's carbine rounds.

2)  The letter 'C' on Garand round is almost closed as in Rebel's carbine round on the left.

However:

3)  The number '2' on the Garand round more closely resembles that on Rebel's round on the RIGHT.  If you look closely at the Rebel round on the right the straight horizontal part on the bottom of the number '2' appears to protrude out farther than the curved part of the '2' above it.  That is evident on my Garand round.

Are we all confused now?

I'm fixin' to have a beer and forget about it. 

https://www.oldammo.com/march06.htm" rel="nofollow - https://www.oldammo.com/march06.htm

See the second photo and description in the article linked above.

Currently for sale as real Lake City.    Fortunately the seller shows the box. 

https://www.mmiammo.com/products/lake-city-usgi30c-usgi30c-usgi30c-5392" rel="nofollow - https://www.mmiammo.com/products/lake-city-usgi30c-usgi30c-usgi30c-5392

Probably a good image to save to everyone's Chinese LC52 file. 

Guess I should have updated y’all on what I learned. I shot some of both, it all went bang and I still have all my fingers. Also have reloaded some, and it did not break my sizing die so I reckon it was ok!

I'm now sure the bottom half of the 5 on the casings you posted are not the same shape as the fake 5.

Check out the additional article I just added above -

This one https://www.oldammo.com/march06.htm" rel="nofollow - https://www.oldammo.com/march06.htm

Apparently the PRC (communist-China) casings are about 4 grains lighter than Lake City.

Also very difficult to remove the primers.

PS. With the maryland munitions webpage, either download the photo and/or open its own window (rt click) and its much larger with more detail.

With the Oldammo article, right click and open the photos will also lead to larger photos.

(Sort of a duplicate post I think. Old age kicking-in.)

Maybe its a duplicate but its good to mention it again since the stuff is apparently on the market again.   If its true that it was manufactured to resupply their allies, then it ought to be safe to be shoot.  If it was just a copycat effort to make money, then all bets off.   Your experience at least indicates its probably OK stuff. 

Buyers should know its not Lake City; but is Berdan primed, and possibly corrosive.

In my opinion its not nearly as valuable as in-spec commerical or military ammo.

I agree. I have been looking for a box and cannot bring myself to pay the real LC price.

Thinking about it, anyone have spent cases?

Some more going for non Chinese prices