sizing 300 saum to 7mm saum

264win

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  • Oct 15, 2008
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    whidbey island wa.
    just got my 7mm saum from benchmark barrels. in cant wait to try it out. problem is when i size my norma 300 saum brass down to 7mm it leaves a rinkle at the base of the neck . im usung redding bushing dies. the neck die and the fl die do the same thing .do i need to use non bushing dies ? or am i doing something wrong ? thanks for any help adam