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You reference both 223 and 556 at the beginning but then are only talking about 556 brass towards the end of your post.
I assume you just mean non 221 Fireball brass in general.
Are you sure it's the neck and not the shoulder?
I find that LC brass does not form as good a shoulder on the initial case forming compared to other commercial 223 brass.
It gets better after the initial firing though.
Not sure if you are using just surplus 556, 223 commercial, or both.
I don't have a Noveske in 300/221 so I can't comment on your chamber specs.
Try manually chambering some rounds to see if they are tough to extract.
Last edited by Scalce; 05-01-2010 at 10:19 PM.
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