Having a custom 338AI built. I read here that someone did a test starting with a 36" and cut 1" off at a time. Anyting shorter that 34" he lost 150fps per 1" cut off. Am I going to have accuracy issues (barrel harmonics)?because of the length 34"? Not shure of the taper but the barrel will weigh about 8lbs. I have talked to locals that had 34" barrels lighter barrels and had to cut them down to 30" because of barrel harmonics.