Hello all, I am seeking a 220 swift barrel, not much luck. A friend told me he could rechamber a 223 barrel for me whitch sound great, but barrel twist is different. I have a 220 swift ruger 14 twist, and I shoot 55 gr. spitzers threw it with amazing accuracy, and want to duplicate that. Will a 223 barrel with 10 or 12 twist even come close?