Because the .223 caliber rifle will most likely injure not kill a deer or you shoot the deer 10 times and waste the meat, which is why real hunters hunt. (Not just to kill shit) Also in a lot of areas you can only use 3-5 shot clips for hunting big game. A .223 is a varmint gun at best not a survival or hunting rifle. And yes I heard of target shooting, used to do a lot of skeet shooting before I moved to town and got rid of my guns, for hunting I prefer my long bow (compound if the seasons almost over or I only have a day or two to hunt) now there is a level of body control. Last 4 deer I shot were under 10 yards from me.