I was stationed in the San Francisco area for 3 years early in my Navy career. I got in good with some of the landscape guys on the vineyards in Napa and could shoot hogs at will. All I had in CA was a Ruger M77 in .243 that I used for both hogs and blacktails. The .243 worked on every hog I shot it with and I always used a high shoulder shot. But, I was shooting hogs for meat and didn't target any big pigs, mostly ones around 100 lbs.
On a side note, the .243 worked well on the blacktails too.