These LRH rifles have long throats and can be finicky about C.O.A.L.. I have been up and down.
Most shoot .020" off the lands but the Bergers jump about .010". I noticed you are using Mag. primers any reason for this?. F210 and R91/2 seem to work real good.
Lapua seat the 139 to an O.A.L 3.110" and Blach Hills seats the SMK.to 2.980". I have tried these lengths and the accuracy of both is good. I have about 120 rounds through it,and clean every 20 or so shots. Just have to do it. I will start my long range shooting next week all the way to 810 yards.
Most shoot .020" off the lands but the Bergers jump about .010". I noticed you are using Mag. primers any reason for this?. F210 and R91/2 seem to work real good.
Lapua seat the 139 to an O.A.L 3.110" and Blach Hills seats the SMK.to 2.980". I have tried these lengths and the accuracy of both is good. I have about 120 rounds through it,and clean every 20 or so shots. Just have to do it. I will start my long range shooting next week all the way to 810 yards.