I have a Hart number 3 Contour 7 mm rifle barrel blank with a 1 in 8 twist that I intended on using for a 28 Nosler. I already have two 28 Nosler with Rock Creek and Proof Research barrels that I like. I was thinking about using the 1 in 8 for a 7 mm WSM build shooting Hornady 162 grain eld-x, Berger 168 vld or Nosler 168 accubond long range bullets. My thinking is that a 1 in 9 twist would be better for the 7mm WSM and 160ish bullets, and that the 1in 8 would be more for the 175 180 grain bullets. Is it possible to have to fast of a twist and should I not use my 1 in 8 twist barrel for the 7mm WSM?