.338 Lapua? I wouldn’t recommend moving up to that cartirdge unless you are proficient in shooting lesser cartridges. Otherwise you’re wasting ammo. .338 Lapua has earned confirmed kills of over a mile, and to the best of my knowledge, you won’t be seeing distances like that unless you’re overseas in the sandbox. I’d really recommend just going w/ .308 due to cost and efficiency. It’s an excellent round and can be used at any range around here and max out their longest range. I believe the longest confirmed kill is just over 800 meters with .308, so you won’t have any problem hitting a target at even 1,000 yards.
If you really wanna spend $7 a round, then be my guest, but there are plenty of other cheaper options that can do what you want. Even .300 WinMag would be a better choice and more cost effective, especially since it may become a NATO cartridge in the near future so there will begin to be surplus available.