Let me add, on precision shots, and all shots for that matter, folks get to hung up, IMHO again, on the fact taht if the PH or guide says you can shoot that animal, they feel its the PH or guide saying you HAVE to shoot that animal and NOW...
The ability to know when and where you can and should shoot is much more important.
I've passed shots on larger animals than I"ve ever seen, because I had not a good shot. OTOH I"ve shot game where I had a good shot a lot farther than most ever will.
The ability to know when and when not to, is very important.
And teh guide should never be saying... hurry he's getting away... or he's going to run....
