Military Primer crimp on 357 Mag Brass?? Pics

Rule3

Rule3

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I bought some once fired brass. Most of it is MagTech which I have used a lot of of when I could afford to buy ammo. It is nickel plated and was nice and clean so I sized/deprimed and started to prime with a RCBS hand primer. Using some CCI and Win SPP. Some of the primers were very hard to insert and I even mangled/deformed a few. I never had this happen and I looked at the primer pockets. Here are some pics. The bottom brass seems to have a military crimp or is different than the brass in the center, The top two, one is Win the other Rem just for reference.

is this really a crimp on a 357 Mag???

DSC01419Small.jpg

DSC01418Small.jpg

DSC01421Small.jpg
 
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CBC is made in Brazil (Compania Brasileiro de Cartouchoes, Sao Paulo).

CBC often manufactures ammunition for military customers as well as for commercial and sporting sales.

Your brass has a primer crimp. Remove it and you should not have problems with primers.
 
Texasflyboy said:
CBC is made in Brazil (Compania Brasileiro de Cartouchoes, Sao Paulo).

CBC often manufactures ammunition for military customers as well as for commercial and sporting sales.

Your brass has a primer crimp. Remove it and you should not have problems with primers.
Click to expand...

Thanks. I have seen the military crimp on 223 ammo but never on 357. I just thought it odd as I did not know Military used 357 mag.
 
Well I am glad I had bought the RCBS swager die/tool for 223.
I just got done getting rid of the primer crimp on the 357 brass. What a pain as I was out in the hot humid garage. I really never thought I would need to do that for revolver brass. I tried calling my supplier but he must be on vacation. I need to vent.:( Oh well, another of life's little lessons.
 
I ran into a few 38 special military cases that had a curious 3 point crimp in them, and just figured it was one of those administrative things where someone said " well, the contract says all these rifle rounds have to have the primers crimped in, so we'd better do these, too" without ever knowing why or bothering to find out.

Fortunately I only had a very few so a few turns with an RCBS de-burring tool turned them into 'commercial' brass and that was the end of that.
 
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