Thank for the reminder that I should be at 250IU EOD or E3D instead of weekly... I have this written down, just totally got lost in the math. So, I will triple the amount I need to pin to .06 which will be much easier to see in the syringe.
I see what you are saying as far as "wasted space" but a single shot syringe is a single shot, regardless of what load you put in it... so, as long as you know your concentration there is no need to increase volume just to be able to fill up the syringe with more liquid.
It would be nice to be able to put both the HCG and test in one pin. I know some AAS for mass guys do this. I don't see an issue with it, except that when I load it I always draw in more than I need then slowly push out any voids. I don't know how they could do that with two different compounds without ending up with the wrong dose or with voids.