I am not sure the twist rate on factory 7mm Rem. Mag barrels and I would like to know if anyone has experience shooting the 162 gr. A-max and if it stabilizes ok and if accuracy is good. This is a very handsome bullet that I would like to try, but the box states 8" twist rate?? My 7mm rifles are late model Win. Model 70 , Rem. 700 and Browning Model 78?