I am considering building a 6.5 to hunt with and shoot run and gun tactical matches. I want the barrel 20 or 22 inches. I will be using a savage 12 action more than likely and a premium cut rifled barrel. What contour should I be looking for if I want to keep the weight with scope to 9lbs? I saw a few in Remington Varmint but didn't know if it would be too heavy. Which caliber would be best to utilize the shorter barrel with the 130's or 140 grain pills, 6.5x47, .260 etc???