I'm looking to build a 700 in short action. I love my 308 and won't mind getting another if that's the best option. I plan on hunting deer and pigs out to 600 yards max. I'm sure a 308 will do the trick, but i was wondering about the 300WSM. I would like a heavy contour barrel on the gun, and for it to be magazine fed. If y'all think i should stay with 308 what ammo would you recommend? I've been using 168's, but 200 yards was my max distance. Do you think 175 federal gold medal would be good for 4-600 or should I go heavier??