Making 8 X 57 mm empty cases

Ben

Moderator
Staff member
Years ago, ( Around 1968 ) I bought an electric furnace hardened 8 X 57 mm file trim tool . It looks like a shortened 8X57 die, but has no internals. Bump the shell holder against the bottom of the die, put in a 06' case that is lubed and everything that sticks out the top is cut off with a fine tooth hack saw blade. ( The hack saw blade won't even scratch the top of the die ).

I have 1,000 L/C , U.S. military blanks, I paid $10 for them about 30 years ago. I knew then that I could make 8 X 57 mm brass out of them. They have just been sitting on the shelf waiting for me to tackle the job.

There is a crimp ring on the neck of a blank. Once they go through an RCBS 8 X 57 mm F/L sizing die and my neck turner is used on them to give a .012 " thick case neck, that crimp ring is removed.

This has been working real well. I seem to get just as many loads with this brass as I do commercial cases ( maybe more....... )
Any cast 8 mm bullet sized to .325 or .326 chambers easily with my formed cases in my scout rifle.

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I find it very comforting to know if " Hard Times " come, I can still shoot my 8 X 57 mm Scout Rifle, even if commercial brass is unavailable.

I realize that there is considerable controversy about the strength of military blank brass, some say it is " reject " brass. Others say it is no different than any other US military brass.

To be on the safe side of things ( always a GREAT place to be ) , I reserve my formed cases for light cast bullet loads that build mild to moderate pressure. I have fired 100's of rounds of cast loads with my formed 8 X 57 mm brass with zero problems.

I'm certain that many will look at this and say ....." Way to much work ".
However, If you can't obtain 8 X 57 mm brass in the future, this system may end up looking real good. It will keep my Scout Rifle Shooting.

I've made 8 X 57 with this system using commercial 25/06 cases, 270, .280, and 30-06 cases. All form well into 8 X 57 mm.

Ben

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Here I am removing the military crimp :

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Here is the " Finished Product ". NOE 326407 plain base, sized to .326", 10.0 grs. of Promo, Wolf LR Primer.

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S Mac

Sept. 10, 2021 Steve left us. You are missed.
Looks good Ben. Do use Promo with Red Dot data? I've read that and use it myself in that manner.
 

Brad

Benevolent Overlord and site owner
Staff member
Not Ben but I use Promo as Red Dot by weight. I shoulda bought a few more 8 pounders when I got one for under 100 bucks.
 

Ben

Moderator
Staff member
I don't use max loads interchangeably, but I think nothing of using suggested starting loads interchangeably ( Promo / R Dot )
 

Todd M

Craftsman of metals...always learning.
Awesome work as always, Ben! What primer pocket swaging tool are you using in your picture?
 

Ben

Moderator
Staff member
It is an old C-H. Again, that one goes back to 1967.
I remember the day I bought it. I paid $12 for the tool.
$12 wasn't easy to get your hands on in 1967 ( at least for me).

Ben
 
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9

9.3X62AL

Guest
Ditto Todd N's comments. As always, Ben's superb photo-journalism imparts great info and tells a fine story.