30-06 case head deformation - M1 Garand

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30-06 case head deformation - M1 Garand

Postby warrlac on Mon Dec 05, 2022 2:28 pm

20221205_135518.jpg
30-06 Case Heads. Commercial vs. MIL


Doing some case prep for next season. While swaging the primer pockets I noticed that most of my military brass has a flat spot on the edge of the case rim. The commercial brass does not exhibit this but instead has a small cut mark on the edge of the rim.

Am I looking at something typical or should I endeavor to adjust something in my rifle?
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Re: 30-06 case head deformation - M1 Garand

Postby Rip Van Winkle on Mon Dec 05, 2022 4:02 pm

M1's are tough on brass. I had some Winchester brass that I kept track of how many times I reloaded it by the number of dents in the rim.
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Re: 30-06 case head deformation - M1 Garand

Postby warrlac on Tue Dec 06, 2022 8:15 pm

Rip Van Winkle wrote:M1's are tough on brass. I had some Winchester brass that I kept track of how many times I reloaded it by the number of dents in the rim.


So what I'm seeing is pretty normal then...
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Re: 30-06 case head deformation - M1 Garand

Postby Rip Van Winkle on Wed Dec 07, 2022 7:07 am

Yes, how badly it deforms will depend on the hardness of the brass.
I will never apologize for being an American.
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48 down, Still in the hunt for a heavy!
President's Hundred (#48 2018)
Certified NRA RSO
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