Hi 1Ton.... I have a few 30 cal's, lever actions and smaller cal's, of which has developed into an African game battery over the years, excluding the big an dangerous stuff. I have only hunted in Africa, not having the funds to spoil myself with a trip abroad. However, due to relocation to OZ soon, I have thought long and hard over an allround pig and other vermin rifle.
Can't seem to get past the reality that it has to be a meduim bore .... don't want another 308, as my win. mod. 88 should be as close to a good 30 cal pig rifle as you can get for a lefty.... and the fact of the matter is, judging from numerous forum's that I have read... PIGS ARE GETTIN BIGGER AND BIGGER!! and if you don't have the stopping power, you will be (1) spending time head first in a bush a lot of the time looking for wouned hog's ... or (2) endanger youself if on the ground facing a wounded pig.
I have read a lot of articles on guys with years of experience on pig's, and the one common thread I picked up was that they all recommend larger than 30 cal rifles, sure you can take pig's with almost anything given the circumstances.. but a meduim bore has it all, and I have yet to find someone who strongly disagrees with that..
Now ...if you think fast and flat/ knock down/ factory ammo, in meduim bore ... there is really only one option ... 338 win mag! I have hunted warthog and bush pig in Africa ... and without exception the action has always been fast and plenty ..unlike a trophy hunt where you might use a few rounds going after a prize buck ... I have seldom returned with more than a handfull of rounds, and a quick pop into a gunshop can keep you going if they have your cal on the shelf...