I posted over this in hog hunting, but then realized I should have posted it here: I had a conversation with some guides on Sunday and the upshot was this: the guides love hunting with their .223s, everything from hogs to buffalo. I was on a long trip and had six rifles with me. I was there to hunt razorbacks and I had intended on using my new Marlin .44 1894, but I was shooting Hornady Leverevolution for the first time and I wasn't satisfied with my accuracy. I had a Browning .308, a 1873 .357, and a Steyr .223. When I said .223, all the guides smiled and said "use the .223!" I had thought that .223 didn't have the stopping power for a big hog, but these fellows say they hunt buffalo with them and they only use .223 on hogs. I was shooting 150 yards on the range. I shot my .44 into some steel plates that were 1/4-inch thick. the .44 put a serious dent in the plates, but did not penetrate (same at 75 yards). The .223 didn't dent the plates at all, but just put clean holes through it. I understand the stopping power of bigger caliber bullets. I understand that the bullet will do a lot more damage to the animal when it deforms. But that said, the .223 is going to penetrate anything (right?), and when I examined the hole on my 400 lbs razorback...I mean cripes, it was a big hole with an exit wound. And yet .223 is called a varmit round. What am I missing? Does anyone have examples of shooting .223 and failing to drop an animal? Any animal?