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Back Up/Expander for 300 blackout

Hi,

I've setup a separate 1050 toolhead for 300 blackout and I've temporally borrowed the backup expander from the  223. Considering the neck is now for 30 cal, should we have a .308 backup expander instead of a 223 to achieve proper belling?

Back Up/Expander .308/30-30 12074

Regards,

Iroquois

use the 30 M1 Carbine backup/expander die

Hi,

Thanks for the fast reply...

Does anyone have a photo of this setup? How well does it work?

Thanks in advance!

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