forming brass

chefpierre

chefpierre

New member
Does anyone have a process of forming 7x57 brass into 6mm remington, (not 6mmBR), or point me in the direction of the information. I am just looking for some lapua brass to use instead of the remington. I am using this for a target rifle and want to see if there is a difference in brass manufacture. Thanks for the input.
 
I load for 3 Ackley Improved cartridges [244AI, 257AI, 7x57AI]. I use the parent 7x57 Remington brass for all three.

In making brass for my 6mm Remington \ 244AI, I start with the parent brass new 7x57.

1 pass through a 257 Roberts FL - Sizing die.
1 pass through a 6mm Remington FL – Sizing die.
Here is where I want a crush fit to form to the Ackley case. My die is adjusted for this.
You might what to check for neck thickness & may have to turn them once formed.

Good luck,

B….
 
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