We decided to see how a 55gr v max out of a 223rem and v max out of an ak would perform on various things such as water jugs and water melons. The ak blew the water jug in half and when we hit the water melon at 100yards with the 223 v max it sent small chunks about 10ft in the air and turned the inside into mush. About 1/3 of the watermelon was gone and not found. I have to say I've never seen such violent expansion.