7 prc length July 8, 2019 16 32 64 128 7 prc barrel length 7 prc action length 7 prc case length 7 prc trim length 7 prc overall length 7 prc barrel length velocity 7 prc bullet length 7 prc full length sizing die 7 prc magazine length 7 prc brass length 7 prc max case length Hornady 7 prc bullet length