IVI Brass with 300blk

If I am reforming any brass and I can get away with NOT neck turning that is the way I would go

Check the neck of your 223 brass if it is .010-011 ???.012 convert it if it is .012-13-14 you will have to neck turn and if it was me I would trade / or keep it as 223
 
Yeah, my thoughts also. I just got some, formed a half dozen and they wont chamber for me; A couple thousandths too large neck with .3085" projectiles.
Not interested in turning it, will use it as 223.

A CGN supplier is using this brass apparently but it clearly wont work in any of my barrels unless I'm missing something.
 
If you can source R-P Brass it is probably your best bet. When I do my large runs of 300 BLK I use it as it just always works for the conversions. Over 100K done and no issues on necks being too thick.
 
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