Alright I am doing some sustanon 250 right now and well no matter how man time I sick my self with the needle I can only do it in the butt, I can never get too far in my leg, chest and definately not my arm. I hate needles and its a miracle I can give myself a shot. Any way my question is can I use a 25g needle or is it to thin cause the sustanon is really thick and a 23g needle is hard to suck up and inject. Also when I put it in my butt cheek I barely can feel it but no matter how loose I leave my leg it is painful is that normal. My buddy always uses his leg. Is there any problem using my butt and only my butt for injection also I am using 1.5 inch long needles, could I use 1 inch when these run out.