I have recently had a 7mm 08 built with a krieger 1-9 twist barrel. What weight bullets are reccomended for this twist and caliber? Will this shoot the light bullets ok? I know it likes the heavier bullets (168 bergers) well because they are shooting around 5-6 inch groups out to 800 yards, but was really wanting to shoot the 120 BT's at some whitetails. Havent had much luck with them yet. I have been using varget and imr4350. Any help is appreciated.