257 rem brass

furcious

November 22, 2022 21:09

I have 16 rounds of Rem-umc 257 rem brass . I looked in cartridge of the world and it wasn't listed only 257 Roberts with a notation about a change on the shoulder angle does anyone know when this cartridge was made anything about them thanks Dan

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  toad67

  November 22, 2022 21:20

  Post a picture of the case head please.

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  Gunnut358

  November 22, 2022 21:44

  The shoulder angle of the parent case, the 7x57 Mauser, is, I believe, 22 1/2 degrees, versus the Remington-Roberts at 15. Your brass is .257 Roberts brass, just old. Probably late '30's or early '40's.

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  austin20

  November 22, 2022 22:01

  C😎😎L

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  furcious

  November 22, 2022 23:16

  Sorry I don't know how to add a picture. The head stamp is REM-UMC 257 REM

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  chiefr

  November 22, 2022 23:33

  It is 257 Roberts. Remington legitimated the round years ago. Some cases were made with HS: 257 Rem and 257 Rem Robt. and 257 Rem Roberts.

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  Horse Plains Drifter

  November 23, 2022 00:35

  Wow interesting, thanks guys. I did not know the origins of that cartridge.

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  Ambrose

  November 23, 2022 17:54

  I don't know when Remington changed the head stamp from REM UMC to R-P but I'd guess around 1950.

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