Let's look at it by the official numbers:
2014 active members = 23,747
GM = 1.5%
M = 5.8%
A = 10.6%
B = 24.8% C = 40.9%
D = 16.5%
Most shooters = C + B = 65.7% of the classified membership.
65.7% = 15,601 of which 62.3% are C shooters and 37.7% are B shooters.
Now take out those that do drills, practice and dry fire - and only take shooters that shoot matches once a week max.
What is the best they are going to rank?
My guess would be C.