I really like the Tikka T3 Lite stainless in 223 but my dealer told me it only comes with a 8" twist. I intend to use the gun for varmint hunting as a light weight alternative. I have a lot of 50 and 55 grain bullets (Nosler BT's). Will these weight bullets shoot accurately out of a barrel with this twist? If not, which bullet / powder combination would you recommend. I don't anticipate any shots over 250 yards.