GRH2
I'm sorry, I don't mean to rain on your parade, but here in Hawaii we have found that the .223 in general is pretty marginal for pig. Our pigs are probably pretty close to what you see, most in the 150lb range with some 200lb+ boars. The bones in these animals are so heavy and the hides are so thick that most light hunting round can't penetrate enough or do enough damage to reliably drop one of them. Local hunters favor the weak M1 carbine with it's heavier bullet, and many also use (will typing this get me banned?) Mini-30's. The preferance is really for heavier bullets that can punch through those thick shoulders.
Local hunters often recover healthy animals with .30 carbine rounds emdedded in the shoulder blades. [:o]
However if you are using good biting dogs and can get close enough then IMHO the power point is your best bet.