If it were me I would use 40gr mini-mags...my second choice would be Federal 40gr Game Shok...they are almost identical to mini mags in every way...mini mags are easier to get...in my gun the Federal is a tad more accurate...
All things considered including RELIABILITY, consistency, availability, price, accuracy if I wanted to make sure I could but follow up shots on a wounded pig that would be my first choice...that would call for less recoil and greatest reliability with good accuracy...
IMO...that spells MINI-MAG...my preference is 40gr solid over the higher velocity 36gr...
I would get within 50 yards max...accuracy starts to degrade quickly after 50 yards and energy bleeds fast too...if you are sighted in at 100' with mini mags your trajectory is pretty flat from 20 yards to 50 yards...that could be a big deal in your situation...better to use high velocity at closer range than hyper at longer range imo...of course if you know for a fact your gun is a tack driver at 75yards with the ammo of your choice then that would be slightly different as the accuracy and safer distance from wild pig would make up for the lower energy at impact...I would still want to be a lot closer for that pig than 75 yards...
I would use a 12ga for back up...loaded with no.1 buck shot...hungry/hurt/wounded pigs are notoriously mean and revengeful as hell...a pistol is better than nothing but a shotgun with buck shot is infinitely better imo...
Options on hyper velocity not already mentioned:
Remington Vipers only 36gr but solid nose plated bullet... 1435fps...price about the same as mini mags...I bought a 500pk recently for $35...reliability and accuracy seemed quite good...however, I don't see any real advantage over the mini mags for the same money and easier to get...and I have only gone thru 100 rounds not 1500 rounds like I have with mini mags therefore I don't assume reliability is on par with mini mags...I have my doubts...especially with high round count as they seem to be very dirty ammo to me...I got these because mini mags were sold out they day I was at the store...
Super X 40gr plated Hyper-Speed 1435fps... These cost me $11/100pk which is about 50% more than mini mags or vipers...I got much better accuracy from these in my gun than the same bullet in high velocity...reliability is not stellar...while a good round if it feeds and goes bang...it might not go bang...I don't buy these any more...just not worth the money all things considered...
These are comparable to velocitors...in my gun accuracy is much better than velocitors...reliability is not as good as velocitors...
Where I shop velocitors cost double that of mini mags...
The Stingers and 1650 fps Super X I have used and see no reason to buy or use them for anything...simple as that...
All roads lead home to old faithful... CCI Mini-mags deliver the goods for what I consider to be a very fair price...