During the years when I was more likely to encounter heavy hogs 300+ lbs, it was 30 calibers and 44 mag pistol.
The rifles were bolt 30-06 and 308 M14 (Norinco). Those two finally settled with Nosler Balistic Tips and Rem Bronze Points. Both had good penitration, expended all their energy quickly and did not deform in the mag due to recoil.
The pistol was more fun to experiment with. With diameter of .429 for most projectiles, the large surface area left the choice to either penitration or expend energy, not both.
After fun with HP's and SP’s, the damage they can do and their limitations I moved on to hard cast. Buddy and I found just one brand and stuck with it…KEAD in 215 grain and 240 grn. out of The Colony, Texas. This was in the mid 90’s. The choice of the weights went to 215 grn which choreographed out of my Red Hawks @1900 fps…no gas check nor leading of barrel. The second fastest 44mag load was my 180grn JHP @1600fps.
With the 215 Grain hard cast KEAD pills, I got complete penitration of hogs with a large hole. Some went down, some ran off through the brush like a dozer running a quarter mile track. Did not care if the ones that ran were not found right then…they were dead from the big wound channel in both sides of them.