308 Norma Mag

The .308 Norma, my favorite 30 cal Magnum. Probably your best bet is to pick up an inexpensive of calipers. I have a set of dail calipers I use. There are electronic models available but I prefer the 4" dial set I have . No batteries to worry about and they've worked well for many years.
 
Case length

Best case length guage you can buy is a dial caliper. A 6 inch model is easy to hang onto and the price for a half decent one has come down a long way since I got mine 15 years ago. Once you have one you will find 99 other uses for it. A good investment for every loading room.
Carry on!
 
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