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Sig 300 BLK STAINLESS CASE CUTAWAY

rcs9250

I pick up range brass at my gun club. Lately a member has been shooting a lot of Sig 300 BLK in the composite construction stainless steel case.
I have attached a bunch of photos of its construction. I spent my life in manufacturing and was curious of their assembly method.
The case head is very magnetic. It’s either nickel plated steel or 400 series stainless steel. The rest of the case is very mildly magnetic so am thinking maybe 18-8 or similar stainless steel.
Yes, I have too much time on my hands (retired) .
See next post for additional photos.
 

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oh, they do know that term; they just don't care. The department who dreams up all these nutty things are composed of officers who do not stray far from their air-conditioned offices at the Pentagon.
 
All this is driven from below. A new requirement by a 3 letter agency or some tier 1 guys say " Hey let's turn a BLK Out into a 308 Win. You would but most don't understand the crazy stuff they come up with. " Hey we have a round wheel, lets make it square, we can go faster" I see it all the time.
Most get fixated on the bright shiny thing.
 
DaveTooley said:
Don't think it's SIG.
Click to expand...
I think you might be right. I’m not sure why I think it’s Sig ammo. Maybe I saw a Sig ammo box in the range trash can at the range and assumed it was Sig. Last night I did a quick google search for Sig 300 BLK ammo and nothing with stainless cases resulted.
 
dellet said:
The “S3” is Shell Shock technology. Been around for awhile. It was an early head stamp. They did make cases for other companies.

shellshocktechnologies.com

Technology | NAS³ Cases | Next Generation Ammo

Redefining the future of ammunition with our revolutionary two-piece Nickel Alloy Shell (NAS³) case technology & the next generation of ammo with Shell Tech.
shellshocktechnologies.com shellshocktechnologies.com
Click to expand...
Awesome. Mystery solved. And they show a nice labeled cross section that I attempted to do with a jewelers saw. Thanks.
 
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