i shoot a lot of ghogs and have some that refuse to DRT. a hollow point is supposed to come apart internally dumping it's energy and shutting down the pigs nervous system. poke a big enough hole in a blood vessel and they bleed out...occ after crawling into their hole or under a building...not good. i have been hollowpointing match bullets for some time now to accomplish this and recently tried something that is really impresive and about as much fun you can have while keeping your clothes on. i went from a 1/16 in drill to a 5/64 and opened the tip a bit more. shoot a grapefruit at 100 yds and you get a HUGE exploding water bomb! very small pieces of gfruit fly in all directions. pop one at 200 yds and you hear the whummpp and get the water bomb effect also. the higher the velocity, the greater the explosion. our ranges don't allow steel or tannerite but fruit is ok. oranges will work but a gfrui has thick skin and seems to be 90% water and the difference between the target bullet and the 5/64 in hollow point is pronounced. yes, i do have a lot of free time on my hands.