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I think you're going to be happiest with something like the Nosler Partition, 100 grain. Here's why:
Most people think that if you graph penetration on the vertical axis vs. impact speed on the horizontal axis, the line slopes upward to the right, i.e., more speed = more penetration.
This is completely wrong.
I've attached a graph of what five standard cup and core type 30-06 180 grain bullets do. The slope is downward to the right, i.e., in reality more speed = LESS penetration. If a standard bullet is going too fast, it opens too much, too fast and penetration suffers seriously. Note how poor penetration is above 2800 FPS.
A 243 can get a 100 grainer going about 2950, so you could be well above the point where penetration dramatically drops with standard bullets.
Ballistic tip bullets are built to open more violently than standard cup and cores. That's OK for whitetail, but I don't think you'll like the results with gnarly old hogs.
It's hard to beat a Nosler Partition in this application. It's penetration curve is just plain flat at 17" from about 1700 FPS to as fast as you can get the bullet going. Another one to look at is one of the Barnes all copper offerings, or perhaps even the AccuBond or old fashioned Nosler Flat Base (1700-3100 FPS)
I'll admit to not being a hog hunter, so someone here with more experience in that area may offer a different opinion. But based on what I know about bullets, that's my opinion.
In any event, good luck and good hunting.
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