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Brass forming question #6885172 09/12/17 05:59 PM
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daniel1381 Offline OP
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can I take a piece of once fired 308 brass and turn it into a 338 federal brass? if so what steps do I need to do?


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Re: Brass forming question [Re: daniel1381] #6885194 09/12/17 06:23 PM
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Yup. Run the .308 brass through your .338 Federal die. If you can, anneal the necks afterwards.


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Re: Brass forming question [Re: daniel1381] #6885207 09/12/17 06:35 PM
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+1. I like to size up or down in about .020" increments. So, going from .308" to .338" (.030"), I would size it up with an 8mm (.323") expander ball, and then a .338" expander. It makes it easier on the brass and keeps run out down.


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Re: Brass forming question [Re: daniel1381] #6885209 09/12/17 06:37 PM
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daniel1381 Offline OP
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thanks guys will do!


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Re: Brass forming question [Re: daniel1381] #6885270 09/12/17 07:21 PM
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That's a good idea. Expander balls can be changed easily and they're not expensive.


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Re: Brass forming question [Re: daniel1381] #6885345 09/12/17 08:24 PM
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Yes. I run a Redding T7 turret press, and set up 2 dies. I'll expand in one, then rotate the turret over 1 position to the next die. Return the back to original die, and do it again. I like the turret presses for this reason, as you can do multiple tasks in one step.


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Re: Brass forming question [Re: daniel1381] #6885876 09/13/17 04:31 AM
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Yup they have you rolling right with the 2 steps, the Hornady tapered expander balls work well for such task. Lube the inside of the case neck well to make it easier.

338 Federal is a nice thumper of critters inside 300 yards.


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