Help! My Garand Has Started Denting Cartridge Cases!

[musketjon]

Those look more like hydraulic dents from using too much case lube during the resizing process of hand loading. Did you notice the dents before or after resizing the cases?
Jon

Information

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[Doco overboard]

Fill one with water and then strike with a closely fitted wood dowel. Wait until it becomes warmer of course and be prepared to get wet, see if that that doesn't get them out.

[CINDERS]

That may be the possibility to much lube but you would see that after sizing as you have to handle the cases a few times prior to putting the projectile in like, wipe case after sizing, TTL, clean primer pockets, seat new primers, fill with powder & seat bullet you would notice that size dent in one of those steps surely. I would look at the rifle.
I now use Hornady spray on "One Shot" fast and easy, less mess very easy to clean from the cases.

I just read an article about these types of dents and their position fits what was pictured in the article it was saying the cases were not sealing correctly and this was a gas dent so have these cases been cleaned as it looks like as a fired one would show powder residue down the shoulder, it also said light charges can also cause obturation issues due to lower pressures in the chamber
They also stated that you can get this from having oil in the chamber but as you had fired 40 odd or were these in a string earlier on or rather hap hazard during your shoot anyway just a few things thrown out there for you to consider.

Have a read of the article anyway here is the link;
Redirect Notice

[musketjon]

Definately lube dents. Load and fire as normal. The dents will pop right out.
Jon

[henry r]

if they were lube dents wouldn't they have popped out when he fired them?

[browningautorifle]

if they were lube dents wouldn't they have popped out when he fired them?

There's a chance I got carried away during one of my reloading sessions and oversprayed. I will certainly be on the lookout now.

It appears now that he's gone to the point of sizing and more...so these aren't fresh fired at all. Typical of us not getting the whole story, we end up a different place completely. Those will be lube dents as many have pointed out. Yes, they'll pop out.

[WW2Buff]

You guys are making good comments and asking good questions, to the point that I'm now no longer sure when I noticed the dents. The cases in my photos had been fired numerous times. I took the photos after a reloading session, so they were spray-lubed, rolled in a towel, deprimed/resized, case length corrected, then tumbled. So, yes, handled numerous times. I'm thinking now I noticed the dents post-tumbling, which is weird - why didn't I notice them earlier?

Regardless, I now think those of you who believe these to be resizing dents are correct. I very likely got over zealous with the lube spray, didn't wipe the cases enough, then dented them in the press. Why I didn't notice the dents earlier? Who knows... I do, however, have terminal age. That could be it...

Hoping for a range session tomorrow. I doubt that will produce any dented cases. Thanks all.

[WW2Buff]

Those of you who pointed me to the lube/resizing problem were right. Finally got to the range today. Saw no evidence of denting during the session. Loaded up a clip with 8 of the dented cases and firing returned them to normal. Had I not segregated these 8 casings and allowed them to mix with the rest, I would not have been able to identify them. Pretty impressive how the dents fired right out smooth again.

Good lesson learned. Still amazed that I didn't notice the dents during reloading steps subsequent to resizing. Guess I need to turn down the music...

Thanks to all who commented. Issue solved...

[CINDERS]

Thats why I was going on the other data I found on squib loads or low pressure ones henryr I have dented my cases a few times with excess lube years ago and you soon notice them I put them aside and re-fire formed them separate from other target ammo mainly plinking, still the answer may be there somewhere.......

[CINDERS]

AHH yes the second guess game like where did that powder come from oops no primer or pppffffhhhht! nothing out the barrel projie still in case ahh yes again this time no powder much to the amusement of your mates on the range so your not alone WW2 in having fun with reloading especially if you have been at it on the press for a while or have a few 000 cases to do. Glad the situation was resolved carry on......

At 50,000 PSI that dent would be there for a mili second and then as you say "like it was never there"