Hi, I am in the process to put a new barrel on one of my rifle (a bold action Mauser 66s) and not yet sure of which direction I want to go. I am not yet handloading as I just cannot dedicate time to this now (but plan in 18+ months) So I must rely on factory ammo (Remington, Lapua, Ruag, etc.) I want to be able to shoot longrange. I hunt in Europe and equivalent game are Elk, mule deer, antilopes, wild hog. I have mainly two ideas: -300 RUM: I like the ballistic. I like also the power level ammo idea. Some argue they don't understand why to shoot equivalent of 30-06 in such a gun/case. For me it is quite obvious, a mule deer at 150 yards does not require a 180gr at >3300 fps! I dont like to have too much meat damage if not necessary. Have some of you experience the power level ammo? the accuracy is just marketing advertisment or more less true? for the barrel 26''? - 338 Lapua: I like the balistic and like the potential heavier bullets. I could use full metal jacket for smaller game to avoid to much damages. I wouls as weel have longer range opportunity. barrel would be 27-28'' In terms of recoil I guess the two are quite the same. Not sure about the groupment potential of the two caliber, 300 RUM sounds like mor hot and thus more prone to large groupment. some hints or comments would be appeciated.