Ultra Mag Brass

Edd

Well-Known Member
Joined
Jan 26, 2011
Messages
3,814
Location
Tulsa
If any of you guys measure the base diameter of your new 300 or 7mm ultra mag brass, I'd like to know what sizes you are finding. I found one 3 year old thread where someone had measured .543". Is that consistent with everyone else's measurements?
 

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