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300 RUM V 7mm RUM
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<BBS>
posted
Are the 300 Remington Ultra Mag and the 7mm RUM the same case size? If not how much smaller is the 7mm?
Thanks for any help
BBS
 
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<ultramag>
posted
The .300 RUM and the 7mm RUM are exactly the same. They are based on the .404 Jeffery. The only difference in the two is neck dia. I have loaded for the 7mm using .300 brass before I could get my hands on 7mm brass. Hope this is what you were after.

 
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