Check out spotinjections.com. This site will give you the answers you want. Also, if you are using sust or prop, you will be better off injecting into your glute do to the pain expierenced in the smaller muscle groups. Also, I will limit my injections in my quads, delts, bis, tris, and calves to no more than 2cc's at most. Any more than that and you are looking for some pain. Drop me a PM if you have any problems. Karma now???