I use pull-down F-C military brass I got in boxes of 1k. Originally I got them to reload for Garands and Highpower matches. I set aside 300 of the same lot for my Husqvarna hunting rifle and I'm set for life on 30-06 hunting cases.
No, there's no 2 grain penalty for using mil 30-06 cases, they fall withing the variances of commercial brass of different brands as to internal volume.
Advantage: hundreds of cases all of one lot, match prepped, tumbled to look like new commercial.
