Well i was looking at getting my 7STW Maid into a 338 Norma off my 700 long action but no smith liked the idea so hear is my ? 338 rum what twist barrel for 300gr bergers ? barrel would be 26'' fluted. What kind of velocigy can i get 2700-2750 will that get me out to 1300 yd with enough foot pounds to still kill a elk ? thanks for input. Joe PS this would be a pack rifle i have a 338 AX FOR AMBUSH.