since you dug this up, its worth commenting that shooting in your legs is a bad idea, you are much more prone to infection, and there are a mass of nerves, lymph' veins', arteries, and layers of tender tissue.
plus the containment of pants or socks equals heat, darkness, and trapped moisture. its just no good. with pills this is all especially worse, my friend who took up the point wound up "having" to go for his legs with ms contin/roxies/H, then speed balls.
he was my connect, but ignorant, the poor fool after a months violent use his left leg with out unbearable pain... him just pumping gas into his car was a pathetic enough sight.
he would ask questions with deep concern, and caution. but if Morpheus wants your leg, arm, heart ventricle or quadrant,,, Morpheus will take it, if allowed.