A friend of mine times actions and it's amazing how smooth an action can operate when each step is at the correct time with no over working, he's a BR shooter and I can really see the importance of timing there where you need that rifle to function smooth without disrupting it in the bags. In a hunting rifle I really noticed just how nice a timed action is to run after firing, you don't have the lift of cocking then the dead space between cocking and primary extraction, it's just one smooth as butter movement. Same with closing the bolt, you don't have the bolt handle snap down a little from the cocking piece dropping to the sear then having to shove it down while the lugs are pulling the bolt forward recocking it, you just get one smoother straight down bolt close.