Don't use a Lee die to form 300.
Don't use thick walled brass.
Get the slotted gauge and use it
And you'll be good
brassmaking challenges- neck diameter
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Re: brassmaking challenges- neck diameter
PSA 10.5" & 16'' FN CHF CL 300 AAC Blackout
Re: brassmaking challenges- neck diameter
I use the Lee die, if necks are over 330 I turn them. Simple solution.
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