I valled the good people at brux barrels today to see if they could help me out with a barrel. They had a HV 6mm 31' long in a 8.5 twist. I took the barrel for 285 buck. I have never had a 8.5 twist before so i am wondering how heavy of a bullet i will be able to shoot? I am hoping i can shoot a 105 berger. what do you think? Lee