Decapping military 5.56 and 7.72 Brass. Consumptive?

[Airgator0470]

That's exactly what I'm saying . If you give me a moment I'll see if rumbler can post it

At one time I had a drawing that indicated a .002 (or something really small) only in the neck length IIRC. Can't find it...

[seadog]

I'll bite.
Base diameter 223. 0.3760 . 5.56 0.3780
Shoulder diameter. 223..3553 . 5.56 0.3560
Neck-2/Case Mouth. .223 0.2540 5.56 0.2550
Freebore diameter. 223 0.2245 5.56 0.2270
Base-to-case mouth. .223 1.7720 5.56 1.7750
Base to shoulder. .223 1.2340. 5.56. 1.2380
Neck length. .223 0.2200. 5.56. 0.2180
Freebore length. .223. 0.0250. 5.56. 0.0500

The throat angle is also off by 0.6 degrees

[seadog]

I'll bite.
Base diameter 223. 0.3760 . 5.56 0.3780
Shoulder diameter. 223..3553 . 5.56 0.3560
Neck-2/Case Mouth. .223 0.2540 5.56 0.2550
Freebore diameter. 223 0.2245 5.56 0.2270
Base-to-case mouth. .223 1.7720 5.56 1.7750
Base to shoulder. .223 1.2340. 5.56. 1.2380
Neck length. .223 0.2200. 5.56. 0.2180
Freebore length. .223. 0.0250. 5.56. 0.0500

The throat angle is also off by 0.6 degrees

[Rumbler]

Here you go. I think whoever snapped that first photo may have a nervous disorder as bad as mine.

IMG_20140204_183513.jpg

IMG_20140204_185739.jpg

[Airgator0470]

I'll bite.
Base diameter 223. 0.3760 . 5.56 0.3780
Shoulder diameter. 223..3553 . 5.56 0.3560
Neck-2/Case Mouth. .223 0.2540 5.56 0.2550
Freebore diameter. 223 0.2245 5.56 0.2270
Base-to-case mouth. .223 1.7720 5.56 1.7750
Base to shoulder. .223 1.2340. 5.56. 1.2380
Neck length. .223 0.2200. 5.56. 0.2180
Freebore length. .223. 0.0250. 5.56. 0.0500

The throat angle is also off by 0.6 degrees

Uhh.... excuse me Sir... those are CHAMBER specs, I posted those and gave them to Rumbler some time back.

BRASS... the question was whether or not there was a difference in BRASS not the CHAMBER...lol.

Other than minimal case wall thickness... .223 Rem cases and 5.56 NATO cases are identical, only the CHAMBERS and load pressures are different.

You had me thinking I was about to learn something...

[Airgator0470]

Here you go. I think whoever snapped that first photo may have a nervous disorder as bad as mine.

IMG_20140204_183513.jpg

IMG_20140204_185739.jpg

I guess he did not read post #19... I clearly asked if he thought there was a difference in the brass measurements... I knew for a fact there was not... but I figured maybe he had something.

This is what I posted some time back... remember?

[seadog]

I had my head wrapped around chambers. Apologies for the confusion.

[Airgator0470]

I had my head wrapped around chambers. Apologies for the confusion.

LOL... you had my attention that's for sure.