In science, one must seek to eliminate, mitigate or isolate variables.  Adding a timed element to a test only introduces more complexity to it, meaning you can't know if the test ONLY measured the trigger, or the individual's various results influenced by the introduction of a time factor.

The only way to be truly scientific is to eliminate the human factor -- i.e. use a mechanical device to pull the trigger.  If the results are the same for both triggers, then it brings me back to what I said all along:  the results are 100% subjective.  That subjectivity lies in the abilities, skills, experience, and consistency of the shooter.

You'd be testing the shooter, not the trigger.

You would be testing how shooter's performances vary when using flat or curved triggers. I didn't say you had to use a timed event, that was just an example. You could test it timed, standing, bench rest, all sorts of different ways as long as you kept the variables the same between the groups shooting flat and the groups shooting curved triggers. By comparing differences in scores across the two groups with all other variables being the same you would be able to see what, if any advantage there was to a particular trigger. That would not be testing the shooter, that would be testing the trigger.

You would be testing how shooter's performances vary when using flat or curved triggers. I didn't say you had to use a timed event, that was just an example. You could test it timed, standing, bench rest, all sorts of different ways as long as you kept the variables the same between the groups shooting flat and the groups shooting curved triggers. By comparing differences in scores across the two groups with all other variables being the same you would be able to see what, if any advantage there was to a particular trigger. That would not be testing the shooter, that would be testing the trigger.

let us know about your results