I am not a Hog hunter although we have enough of them around here. Just for discussion I looked at the ballistics of the Hornady factory loads with xtp bullets. The 240 gr xtp delivers more energy than the 300 and might penetrate that tough old hide better.807 vs 782. Different lenght barrels also. Of course I could be wrong if my thinking here.
One of the locals was around the other day and was talking about shooting hogs around his place. He normally uses a .22 LR, unless he's getting real serious. Then, he uses a .22 Mag!
Hogs are not, I repeat, are not armor plated. They kill real easy if you hit them where they need to be hit, not where you think they need to be hit. The vitals on a hogs are further forward, almost directly on the other side of their shoulders. If you shoot them like a good shot on deer, you've probably gut shot it.
. I use the 240 grain XTP's with H110 all the time and they are very accurate in my Marlin 1894 and my 629 Classic. I have never hunted pigs but the 240's are great on Western Washington deer.
If a jacketed bullet is to be used, I'd prefer a Gold Dot to an XTP. I have a desire to shoot one with my 3" 625 .45 ACP, but for that I'd use one of my own hard cast 255 gr. SWCs.