RE: Bullet selection
With a 25-06, its really all on you. Just like with any of the 6mms, other 6.5mms or anything smaller. Bullet placement is really more important than bullet selection.
Those 100 gr Core-Lokts is the way I would go. At higher velocities, like those produced by a 25-06, Ballistic Tips (which include those Winchesters you meantioned) tend to "crater" or blow up, on impact. They are great long range bullets, but hey, I live in SC too, and 200 yards with the humidity and thickness of vegetation down here is a LOOOONNNNGGGG way. There are places, like fields and gas lines where you can find some longer shots, but inside of 200, I would stick with those Core-Lokts, just because they will hold up better at higher speeds than those BTs. A bullet that doesn't get to the vitals is "worse than worthless".