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85lc
.400 member


Reged: 19/01/18
Posts: 1077
Loc: Georgia, USA
Re: A new type cartridge - 7mm Backcountry
      11/01/25 06:15 AM

This is an interesting concept of revising the cartridge case to allow very high chamber pressure to acheive high velocity from a short barrel. This combination allows a can to be added and still have a reasonable total barrel length.

They are reporting velocities froma 20" barrel that are similar to what I get with a 24" barrel from my 7PRC.

The writeup indicates that there isn't undue stress on the rifle but it would seem that there would be increased barrel wear unless the powder burns cooler than traditional powders.

Interesting (to me) development.

--------------------
RB

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Entire topic
Subject Posted by Posted on
* A new type cartridge - 7mm Backcountry 85lc 11/01/25 06:07 AM
. * * Re: A new type cartridge - 7mm Backcountry 85lc   11/01/25 06:15 AM
. * * Re: A new type cartridge - 7mm Backcountry 93x64mm   11/01/25 06:47 AM
. * * Re: A new type cartridge - 7mm Backcountry Hunter4752001   11/01/25 08:51 AM
. * * Re: A new type cartridge - 7mm Backcountry NitroXAdministrator   12/01/25 06:29 PM
. * * Re: A new type cartridge - 7mm Backcountry DarylS   13/01/25 06:21 AM
. * * Re: A new type cartridge - 7mm Backcountry 85lc   13/01/25 09:04 AM
. * * Re: A new type cartridge - 7mm Backcountry Rule303   13/01/25 01:47 PM
. * * Re: A new type cartridge - 7mm Backcountry NitroXAdministrator   14/01/25 12:51 AM
. * * Re: A new type cartridge - 7mm Backcountry 3DogMike   14/01/25 01:23 PM
. * * Re: A new type cartridge - 7mm Backcountry NitroXAdministrator   14/01/25 08:17 PM
. * * Re: A new type cartridge - 7mm Backcountry DarylS   13/01/25 12:30 PM
. * * Re: A new type cartridge - 7mm Backcountry Marrakai   11/01/25 12:10 PM
. * * Re: A new type cartridge - 7mm Backcountry NitroXAdministrator   12/01/25 06:31 PM
. * * Re: A new type cartridge - 7mm Backcountry 3DogMike   13/01/25 05:41 AM
. * * Re: A new type cartridge - 7mm Backcountry DarylS   12/01/25 07:06 AM

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