Screech, go with a 1-9 twist for the 105's and 107 VLD Bullets. You could go with a 1-10 twist, and you could shoot the 75grn and 87grn V-max's as well as the 105 and 107 type bullets. But if you just plan on shooting the 105 and 107 bullets, then go with the 1-9 twist.
Wildcat