Help me identify this round

deemus

my mama says I'm special
Lifetime Member
Feb 1, 2010
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I have a few cases that I can't identify. This case is virtually identical to a 30-06 case. In fact, they were mixed in with some 06 cases.

The headstamp says "DEN" and "42" on it

The case is basically the same length as a 06, but the case mouth is noticeably larger.

I have no clue what this is.
 

deemus

my mama says I'm special
Lifetime Member
Feb 1, 2010
10,377
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DFW
Well, it ain't 30-06. Mouth is way too big for 06. Somebody must have made something else out of those cases. I will measure tonight, but its got to be close to .40.
 

Moonpie

Omnipotent Potentate for hire.
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Oct 4, 2013
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Gunz are icky.
My guess is its a home made case made into an 8mm x 06.
Converting 8 x 57mm rifles into 8mm x 06 was popular in the years after World War Twice as 8mm rifle ammo wasn't easy to get.

there is also the possibility it is a 333 OKH, .338/06, or even a 400 Whelen if the bullet diameter is as large as you say.
 
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deemus

my mama says I'm special
Lifetime Member
Feb 1, 2010
10,377
113
DFW
My guess is its a home made case made into an 8mm x 06.
Converting 8 x 57mm rifles into 8mm x 06 was popular in the years after World War Twice as 8mm rifle ammo wasn't easy to get.

there is also the possibility it is a 333 OKH, .338/06, or even a 400 Whelen if the bullet diameter is as large as you say.
I found the inch equivalent and will measure it. 8mm x 06 could be the winner. Its def the same size case as 30-06, but with a bigger mouth. 8mm = .323

Nice article about the round here:

http://www.reloadbench.com/cartridges/w8mm06.html
 
Last edited:

deemus

my mama says I'm special
Lifetime Member
Feb 1, 2010
10,377
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DFW
And..... Boom goes the dynamite. Good call on the 8mm x 06. .323 diameter.
 

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