404 rimless Nitro Express r

[doublegunz]

I have two .404 rimless Nitro Express rifle barrels and the bores measure .415". I need information to purchase reloading dies. My .404 Jeffrey has a bore diameter of .422". I want to build the Nitro version. Help thank you

 

[grand veneur]

The cartridge 404 Jeffery was never anything other than a NC loaded cartridge.

Bore diameter: 412"
Groove diameter: 422"/423"

According to Art Alphin in his book, original British specifications called for an undersized barrel ( Bore diameter: 410" / Groove diameter: 418" ) , but was quickly abandoned.

It's best to check the exact caliber of your barrels and possibly also the dimensions of the cartridge chamber. A bore diameter of 415" is very unusual.

 

[doublegunz]

The cartridge 404 Jeffery was never anything other than a NC loaded cartridge.

Bore diameter: 412"
Groove diameter: 422"/423"

According to Art Alphin in his book, original British specifications called for an undersized barrel ( Bore diameter: 410" / Groove diameter: 418" ) , but was quickly abandoned.

It's best to check the exact caliber of your barrels and possibly also the dimensions of the cartridge chamber. A bore diameter of 415" is very unusual.

 

[doublegunz]

You are correct. I bought three .404 Jefffery barrels recently that had been on commercial large ring Mauser rifles that the Tanzania game rangers used for game management. I got confused after looking at my Cartridge for collectors book by Fred A. Datig. These barrels are in transit and I will check them out. The gunsmith gave my this demension information over the phone. The Cartridges of the World book made be think that they are two separate Cartridges. Thank you for helping me.