Practice, Practice, Practice
We need to build up muscle memory and get to know your rifle.
We had a BASA shoot again yesterday, and in the hands of well practiced individuals over 3 ranges the doubles were again 20 seconds faster over the 3 ranges for the day than the fastest bolt actions. (Total time for 17 shots i.e. 72sec for double vs 92sec for bolts)
No disrespect to the PH, but in our simulations on the range, 2 more shots would have been fired already from the double. (I am a bolt guy)
EDIT: Looking at it again: count the shots coming from the right, did the PH not maybe top up his double again already? All kept their cool and the buff is dead and no one got hurt. Respect for that
But in SA we are still blessed to be able to reload ammo and shoot in excess of 100 big bore rounds just on a few shoots a year with ease.