Gentlemen,
As Pitsptr indicated, the targets are all must-hit, so it's impossible to give an exact round count. I believe we shoot three stages in the main match, and there should be between twenty and thirty rifle targets per stage, plus six to ten pistol targets. The Expansion Era stage should be about the same, so you can plan accordingly. I always like to have at least fifty percent more rounds than targets, but I'm an ammunition hog. As far as the long range matches (Main and Expansion Era), both will be ten shots for record with five sighting rounds allowed. I believe Pitsptr is going to allow sighting in the night before as well.
As an aside, the exact number of targets per stage will depend some on the weather. If it's 105 degrees, we'll use a few less targets as no air moves in the canyons. (Ask Drydock!) If it's cooler, stages will be a little longer to get more shooting in.
Hope that helps!