40 + years of loading , 4 257 bee's of mine , custom and mark5, 9 customers , all shoot the same load , 120 partitions , 67gr 7828, 215m primers, best I've ever found , shot elk ,deer, antelope, audad, oryx, ibex, and lots of African game , only change is seating depth , some customs don't have the "freebore" , back them off to avoid pressure. Start your loading at 64.5 and work up slow! Good luck ,the 120 partition I sent the best I've found , less damage to meat , penetrates and expands
