Been using 23g 1 inch needles to pin delts and glutes. With delts minor pain and bleeding nothing to worry about. Been doing glutes last few times practically zero pain and hardly any bleeding. I'm wondering am I doing it right, is 1 inch enough to penetrate the muscle, I assumed so cos I'm quite lean. Am I worrying over nothing, cos I am good at injecting I do it as part of my job,but upon penetrating muscle would expect more bleeding as with my delt, don't want to waste my juice though, advice please!