What does it take to neck down 300 RUM brass to 7MM RUM

dwm

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Joined
Feb 26, 2003
Messages
748
Location
Texas
Can I just run the 300RUM brass through my 7MM RUM dies and be done?

How much will the neck thickness increase?

My 7MM RUM can't use factory brass so I will have to turn the necks anyway. (tight neck chamber)

Doug
 

Boyd Heaton

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Joined
May 14, 2001
Messages
1,071
Location
Lock Haven P.A.
Yes you can...............No way of telling.........And yes you will........
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Brent

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Joined
Jun 12, 2001
Messages
2,537
Location
Palmer, Alaska
Doug,
Size, turn, shoot, and enjoy how easy that was!
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I doubt you'll see a substantial increase. Going from 338 to 30, I don't. But I too must turn them anyway.
 
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