Re: Barrel Twist
Best twists for 308 with various bullets:
190 1-12 min (1-11 or 11.25 Best)2400-2650
175, 178, 180 12 works VERY well (2400-2750)
168 1-12, 1-13, and even 1-14 works well (2500-2900)
150-155's 1-14 through 1-12 works well depending on weather or not youre using Senars or others. (2600-3000)
Weather or not you use formulas or real world conditions, you will find that the numbers above will work very well in most conditions.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.