Originally Posted by Jumpalot
Email Berger and they will send you load info.
I'd suggest H1000 extreme 71grain shoots extremely well in mine. 9.5 to 1 twist rate; H4831 sc extreme 63.5 as well. Reloader 25 right around 66 grain charge. biggest thing in my opinion is your Cartridge length for me 3.80 - 3.85 shoot exceptional for me. A good brass is winchester, federal or lapua, all build good pressure and come pretty consistant. Winchester magnum primers give a good constant, hot, presure building ignition. just whats worked for me good luck! have fun