Unless you’re running a 300PRC or something custom with a fast twist, you’ll want the 175 or 200. The 208 is a very long bullet.
Edit to add that the 175 should do fine at 3k. The 175, 190, and 200 are all suitable for 1:10 twist.
Not that it matters for you, but the 208 has been tested down to a 10 twist supposedly. Out of a 300 prc you’re going to have to get past 800 yards or so to benefit from the bc of the 208 and both are going to blow the same hole all the way through pretty much every hog in the world.