Above.  This is a rough picture of the four beans that we used to generate the chart below.  You can make size and roast estimates to equate them to your own coffee.

Below.  The numbers across the top (in the row starting with "NONE") are the Versalab delivery bushing numbers.  Below them are the average delivery given that bushing with the associated coffee indicated on the left.  Remember that these are averages.  In the "NONE" column for instance, the variation might run from a gram for the NOVO Abeba, down to .2 gram for the Trieste.

 
NONE
15
14
13
12
11
10
9
8
7
6
5
NOVO Abeba
24.8
21.9
20.5
19.3
17.6
16.1
14.7
13.0
11.9
10.3
8.7
7.4
NOVO Espresso
22.0
19.7
18.6
17.2
16.0
14.7
13.4
12.1
10.7
9.1
7.7
6.4
Allegro
Bel Canto
19.3
15.7
12.2
7.8
6.7
Kaladi
Trieste
18.8
15.7
14.5
11.4
7.6
6.4