I am with Iwan2bsolid2 on this one "hey fuck you". I hate when I ask a question and get an answer like WOW. If he has larger marked pins small amounts could be hard to be exact. I would have thought drops from an 18 would be bigger than from a 22.
Now for help. My brother, physics major, said the difference would be very small or not at all. So 6 drops should be 6 drops.
Best luck