Odd primer pocket size

[BUFF7MM]

Found this today when I was prepping some 223/5.56 cases. Colt headstamp and 3 flash holes. I sized and deprimed and it felt like the primer was crimped in so I proceeded to swage the pocket anh that's when I noticed the size difference in the primer pocket. Small on the left measured .170, Colt case measured .189, and the large in the 300 measured .205.
I just find it odd that a manufacturer would have an oddball size like this, anybody know who makes the Colt head stamped 223 cases? This is the first I've ever ran acrossed one.

 

[ST19AG_WGreymon]

Might be the Colt-licensed Russian ammo made by Barnaul.

 

[SKIP]

I think you have punched the third hole believing Colt was boxer primed. I believe Colt is steel case.
Also Berdan primers come in about 6 to 8 sizes whereas Boxer primers only come in 2 sizes.
You are lucky your decapping pin did not break.

 

[smdub]

I think you have punched the third hole believing Colt was boxer primed. I believe Colt is steel case.
Also Berdan primers come in about 6 to 8 sizes whereas Boxer primers only come in 2 sizes.

^this. All the colt I've seen is plated steel, berdan primed, eastern european manufacture. You depriming it may have punched the center hole.

http://www.bulkammo.com/bulk-223-ammo-223rem62grfmjac223acolt-500

 

[BUFF7MM]

I think you have punched the third hole believing Colt was boxer primed. I believe Colt is steel case.
Also Berdan primers come in about 6 to 8 sizes whereas Boxer primers only come in 2 sizes.
You are lucky your decapping pin did not break.

^this. All the colt I've seen is plated steel, berdan primed, eastern european manufacture. You depriming it may have punched the center hole.

http://www.bulkammo.com/bulk-223-ammo-223rem62grfmjac223acolt-500

You're probably right, but it must have been a pretty thin web in the case , it took a little more pressure on the handle, but not a bunch more.

 

[byf43]

I think you have punched the third hole believing Colt was boxer primed. I believe Colt is steel case.


Also Berdan primers come in about 6 to 8 sizes whereas Boxer primers only come in 2 sizes.
You are lucky your decapping pin did not break.

Holy de-capping pins, Buffman!!!!!!!!!

That's a smooth move.

Are you going to get some Berdan primers and load 'em up??????

I'd love to see/read the accuracy results.

 

[BUFF7MM]

I actually moved this case to my universal decapping die when it seemed a little hard to deprime, but honestly I didn't press that much harder on it to get the spent primer out. Maybe I better go look at that pin, I might have broken or bent it.

 

[StickShaker]

I saw something that reminded me of this thread. I was looking for some old cases to practice crimping with my new .38 special dies and came across some aluminum Blazer cases that I recently shot. Looking down in the case I saw Berdan primer holes but in the middle there is a thin aluminum strip over the center. I'm wondering if there is a primer hole in the center under that strip? If there is, my punch would go through that strip without much extra force.

 

[StickShaker]

Being aluminum, I'm not sure if I put the extra hole in the middle but the primer popped out without too much extra force. But if no hole was there, why is there a strip going across the center inside of the case?

 

[Blacksmith101]

You put the hole in the middle. In a Berdan primer case where the hole is now would normally be a projection that serves as an anvil for the firing pin to crush the priming compound against. Take a fired aluminum Blazer case and pry out the spent primer with a sharp punch and you can see the internal structure. This has a good illustration showing a cross section view of the two types of primer pockets:
http://ammo.com/primer-type/berdan

 

[StickShaker]

You put the hole in the middle. In a Berdan primer case where the hole is now would normally be a projection that serves as an anvil for the firing pin to crush the priming compound against. Take a fired aluminum Blazer case and pry out the spent primer with a sharp punch and you can see the internal structure. This has a good illustration showing a cross section view of the two types of primer pockets:
http://ammo.com/primer-type/berdan

Thanks, I'll try prying it out. It's too dark to take a picture inside of the case but I'm really curious about the reason for that metal strip. Maybe I will saw the head off and get a better look at it.

 

[StickShaker]

You put the hole in the middle. In a Berdan primer case where the hole is now would normally be a projection that serves as an anvil for the firing pin to crush the priming compound against. Take a fired aluminum Blazer case and pry out the spent primer with a sharp punch and you can see the internal structure. This has a good illustration showing a cross section view of the two types of primer pockets:
http://ammo.com/primer-type/berdan

You are right, I put the hole in the case. The bar at the bottom is part of the case. Maybe extra support for the anvil?