Would not go out of my way trying to get all the triggers to the same weight, as sear engagement is set at the factory and the only 'adjustment' offered to the end user is winding the pull weight spring in and out.
See here:
Tikka T3 Dangerous Trigger
An older T3 will probably have a slightly different trigger compared to the new T3x.
Set the trigger pull weight to what is reliable under field conditions, I've set a trigger pull at home and found it way too light in the field, especially when wearing gloves in wet/cold weather etc.