i am in the market for a custom long range rifle. initially, i wanted to go with the 338 edge, but i was chatting with a gun smith and he recommended the 7mm class for 1,000yds. according to pointblank software, the 338 edge with a muzzle velocity of 2,900fps and 300gr SMK's hits like a sledge hammer at 1K. this is with a 29" barrel. does anyone have ballistic info on the 7mm WSM, 7mm RUM and 300 RUM with 29-30" barrel? is 29" too long for the WSM? what is the max effective distance of all of the above calibers, lets say elk? right now, i have a 300 WSM with a 24" barrel that spits 165gr interbonds at 3050fps with .3 MOA.