I have several 338-378's and they have different zero points for different applications. If you only shoot to 700 or so yards you can easily do that with a 200 grain ballistic tip at 3600 fps and a 400 or so yard zero. I get over 3700 fps in one rifle. If you are setting it up for long range then the 300 grain bullet at 3000 fps is not a good idea to go with a 400 yard zero. For these I zero close and use my clicks for long range. The 200's are excellent bullets in this gun for short range extremely flat shooting in a big gun. If you plan on going beyond 650-700 yards then get a big bullet and use your clicks.
Predictions are difficult, especially when they involve the future