Today I was sighting in my Savage .22 mag rifle in preparation for Spring groundhog shooting. I shot a Speer Gold Dot round (that I believe was developed for self defense use) at a 12oz soda bottle filled with water. The range was about 20 yards. Much to my amazement the gold dot bullet more or less exploded upon contact with the soda bottle leaving about a 3 inch entry hole and no exist hole. Shooting a ground hog with one of these rounds would be a total joke and I suspect as a self defense round out of a handgun it is also a total joke.