Some of the grisliest wounds I've seen have been from 223 fmj pass throughs on hogs
When I first started hunting hogs, I believed all the hype about large calibers needed for hogs... Being that I had a .223 rifle, I used fmj trying to get the penetration that I thought was needed.... The results were quite shocking, lots of blood and nasty exits
After that I used expanding ammo for hogs...