So i bought a can of Greek 30/06 ammo and some of it was corroded.
Crap.
I went through and put aside all the pieces with external corrosion and... then look what I found.

I have a feeling this round would have at a minimum ripped the case near the neck upon detonation, could have caused a barrel obstruction and a big BOOM.

yeech. be careful out there.

One more reason to say no to surplus ammo...

I’ll shoot surplus ammo all day long. It deserves a closer inspection than fresh factory products but is almost always fine.

Still worth .20c from the pulled bullet, lol:)

Corrosion probably wont cause a crack like that, in my opinion.

I 100% agree shaggy

Also this probably wouldnt be anything catastrophic, it will probably tear into the path of least resistance cutting the throat of the case away at the neck. It probably wont fully chamber the next round, but a split case head will involve a broken shell extractor which can be had cheap enough, that you will forget were it is if it happens again.

Also a lot depends on just how bad the corrosion is. Surface stuff is usually fine. If it rubs off with no clear damage tot eh brass I would shoot it.
IF it looks like its gotten below the surface easier to just chuck into the parts and recycle bucket.

Most surplus ammo is fine. A lot depends on how it was stored. And I second the comment about that crack. Something else happened to that round!

BTW this is a good reminder to inspect your brass when you are loading, if something doesn't look right, feel right, set it aside and look closer. Just cause its factory doesn't mean an occasional flaw might slip through the QA process.
Just like if you swap out mags and chambered rounds for defensive ammo. Always check to see that you don't have set back in the bullet.
I usually make it a point to just shoot the one I had chambered and unload the rest to practice with the carry firearm.

Ah, corrosion can definitely cause a crack like that, in my professional and personal experience. It's not even uncommon. Often it happens from the inside out due to reaction of degraded powder chemicals with the cartridge brass. One of the effects of that can be embrittlement of the brass; very similar to hydrogen embrittlement of steel.

I saw a good bit of this with certain lots of the infamous Turkish 8mm, in which powder degredation was the documented problem. I just sorted out the cracked necks and fired the rest although never through anything self-loading. Eventually the stuff got so hot (or I got better at risk management?) that I scrapped the rest of what I had.

Well the scrapping is about to occur as I do not have a bolt action 30/06 and i'm not risking a 1944 manufacture Garand with known bad ammo.

Where'd you get the ammo?

I've got 4 spam cans of 30-06 on clips I *think* I got from the CMP

Maybe I should open one up and check it out

It's a sign from God. Thou shalt procure an M1903A3.

Do not fail Him.

In the 80's we shot 1944 ammo all the time. Usually worked fine, as good as anything else.
Had so much .50 BMG they stopped making it for a couple decades.
Guntrader GMG3 USN

I wonder if I know anyone that has a dozen of them....Hmmmm let me think....