Answer :
I'm trying to change them, I'm testing with Velites but nothing makes sense.
Using the "reload" field in the "land_units_tables" table set. If it makes any difference I'm playing with the DEI mod files and my mod is ordered above DEI in Mod Managr.
number entered and shots per minute in-game :
8 = 3s/m
30 = 4s/m
100 = 13,648 s/m ??
Edit:
Vanilla Rome 2 test results
javelin_normal "base_reload_time" = 9
Velites "reload" = shots per minute
0 = 7
6 = 7
10 = 7
20 = 8
30 = 10
40 = 11
50 = 13
60 = 17
70 = 22
80 = 33
90 = 67
100 = 13,648