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  #11  
Old 09-29-2016, 01:00 PM
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Caleb Caleb is offline
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Quote:
Originally Posted by Blackgun View Post
I have some old semi auto ammo with a crimp like that.
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  #12  
Old 09-29-2016, 02:17 PM
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DrHenley DrHenley is offline
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Not a crimp, it's a cannelure, usually seen on bullets but sometimes on premium cases to help prevent bullet setback, as others have mentioned.

Here are some that I have (Aguila, Cor-Bon, WCC, and the last three Federal)


Notice the three Federals all are at different depths. I presume for different bullet weights (230, 200 and 180)

I have a box of Federal Premium 230 grain HST with the cannelure:


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Last edited by DrHenley; 09-29-2016 at 02:20 PM.
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  #13  
Old 09-29-2016, 06:16 PM
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Originally Posted by Caleb View Post
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  #14  
Old 09-29-2016, 06:19 PM
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Big ol crimp on this one.

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  #15  
Old 10-01-2016, 04:17 PM
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Quote:
Originally Posted by Riverpigusmc View Post
I've seen it on certain brands yup
Me too, Aguila 9mm
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