every time i shoot, i shoot an air bubble. its not intravenous so no a big deal.
similar to what dexter wrote, i pull more than required into the syringe (i just find it easier to pull the plunger most of the way down the barrel). If i’m looking to inject 36mg or .36mL, i pull around .4ml, invert the needle (still in the bottle) so that the air all goes to the needle end. I push the excess back into the bottle until plunger is at .3ml mark. I then remove the needle from the vial, draw about .1mL of air into the syringe (needle up), invert (needle down) until bubble rises to the plunger end and i inject. I inject every other day, moving from left to right from left delt, left pec, right pec, right delt and repeat.
This method sounds more confusing than it is in practice and its not necessary. All it’s doing is reducing wastage left in the barrel of the syringe, which is accounted for on the syringe graduations anyway. that’s why i draw .3mL to get .36mL injection. As i said, it’s not necessary, not really beneficial or detrimental, but just how i do it. At my dosage it gets me about 3 extra injections out of a 10mL vial - what can i say? I’m cheap