So far this is my first count:
14 crit 80 total hits. I did count TOTAL hits, which is what you should be counting, misses included.
I also suggest a format TBH.
Mag: 85 (+ 9)
Monster: Silk Worm
The monster it's done on is very important, and we need as many controls as possible, which is something to consider.
Here are the things that we need to independantly check, to see if they impact the rate (is going to take more than just 3 people to get, and fraps is highly recommended to use, as getting the info AS you go is tough):
If you want to be really anal and check more things it might be smart to also see what masteries they have, and if they say they have an effect on it.