The 6UM

If you do, a capacity-to-bore ratio its a little better than a 28 Nosler. SO if I am really nice to it, I think I can get 800 rounds or better.

View attachment 537365
I've been working off my own spreadsheet for this (based on cubic inches of case capacity, kind of a PITA) and was curious how you did your math -- specifically the Reference column.

thanks in advance...
 
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