The reason people mostly shoot glutes, then thighs, then delts is that they are fairly big muscles with few veins. When you start site injecting, your risk for hitting veins goes up. I have hit one vein in my delt, none in thigh or glute. However, I have hit numerous in my bis and calves. When you are injecting at least once a day or more like I am usually doing, you have to take the risk...