When I have gear, I boot it. Shots normally between .15 and .25. I feel wired, but don't get a huge rush (takes 5 sec or so to come on, but it's pretty mellow) and never cough. I've used gear from a variety of sources, some better than others, but never a massive rush or cough. I'm not missing (I'm registered at the beginning and end of the shot), and I'm not in an artery. Any thoughts on why no cough or massive rush? Could it be because I don't tie off first? I'm mean, I get it in quick, but maybe tying off helps some how. I'm booting in the arm, so it's not the location either. Lastly, I'm only getting on every couple weeks, so it's not a built up tolorance. What am I doing wrong? All I can put it down to is shit gear...