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7mmx375 history imfo

john33wcfjohn33wcf Member Posts: 6 ✭✭
have barrel moa pistol 7x375 told same as 7U.S. but shorter neck any imfo will help THANKS

Comments

  • nononsensenononsense Member Posts: 10,934 ✭✭✭✭
    edited November -1
    john33wcf,

    This sounds like the 7mm US by E.A. Brown which is the 30-30 shortened and necked down to 7mm. It was created as a silhouette cartridge (Ultimate Silhouette - US). My guess is that the barrel is marked 7mm x 375 by MOA to indicate that it can be made from .375 Winchester brass instead of using the E.A. Brown designation which might have violated some protection they had for their cartridge design.

    Here is a drawing and reloading information. Select the photo pages at the bottom of this page to enlarge them:

    http://www.eabco.com/reload03.html

    http://www.eabco.com/brass01.html

    Best.
  • john33wcfjohn33wcf Member Posts: 6 ✭✭
    edited November -1
    thankyou....im just not able to wait til barrel and empties arrive so ill know then ....is 375 w a rimmed case like 30/30
  • nononsensenononsense Member Posts: 10,934 ✭✭✭✭
    edited November -1
    john33wcf,

    Yes, it is rimmed. The .375 Winchester is nearly identical to the 30-30 Win. except for the length and the obvious neck diameter.

    One thing you should consider is to have the chamber cast to know for sure what the cartridge looks like. If you are getting empty cases that have been fireformed in the chamber then those will work. Hopefully, you will get the dies also. If not, use those links above to contact E.A. Brown for dies.

    Best.
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