Well, hunting large South Texas whitetails is more of a fool's game or an art form, just depends on how it turns out, There obviously must be some attraction to it for someone because, pound for pound, it is about the most expensive hunting there is.
So then picture oceans of very dense brush, about 5 - 8 feet high, in many places too dense for a man to walk through. Couple that with a climatic situation where you might not even get your first freeze until after the season ends so cover is pretty good.
So you take a bulldozer and carve these senderos through the brush, the pipeline contractors and powerline people help but thats about what you got.
erect an enclosed blind, 10 to as much as 20 feet off the ground and space out a number of automatic corn feeders up and down the Sendero....and wait.
You have to have something to get them into the open for a shot, either food or the rut and at that point they can be moving at a rather brisk pace.
Now, the set up comes and you send it. It better work because you just pulled the trigger on maybe $6 - 10 grand. If you wound him and he gets to the brush you will never find him. Simple as that.
So, with the 338 Lapua you can extend your range, perhaps effectively covering 800 - 1200 yards of sendero and perhaps 4 - 6 feeders. (NOTE: that would be 400 - 600 yds either direction from the blind) that gives you more opportunity and the round offers the best chance at an immediate knock down.
Theory is to spend several thou on a gun, on a hunt shoot it once and save a load of money (wait, that just sounded exactly like my ex-wife's shopping report)
In civilian hands the 338 Lapua is a very effective weapon for a very specific purpose. Honestly, I know of really no other civilian circumstance where it would be the first choice but since there is one in the rack now I would be eager to hear if anyone knows of another use for it.
And no, it is not fun to shoot, it is not esthetically pleasing to look at, it is a tool