Denton,
I am sorry but I don't understand what you mean. But from what I am guessing every bullet or projectile will have its own load profile as it flies differently.
Also in looking at the rifles used to generate load data they have longer barrels and faster twist rates. That being said would it be more efficient to start off in the middle of the load recommendation?
Baker,
As a beginner, it's best to start off with minimum loads. As you become familiar with your individual guns, cartridges, and component choices you will be better able to judge when it's reasonable to start with median (or in some cases even max) loads, and when it's not.
This is even more true when substituting components. Even changing something as simple as brass can change you max powder charge by a full gain.
