The reasons why the Enfield bolt is so fast is because of the lock up (60 degree instead of the usual 90 degrees), cock on closing, and finally the ergonomics of the bolt (having the bolt handle right by the trigger).

With a P14 I am personally able to do 22rds a minute at 100m on a round black target. The P14 has a 90 degree lock up and isn't as fast and a Enfield. When I gave my buddies Enfield a go I did 24rds without much practice on the Enfield. The way to get these high rates of fire is to always keep your hand on the bolt and to use your middle finger (or in my case my ring finger) to fire the trigger.