I have read a lot about zeroing my scope and in many explanations 100 yards is used as a example distance to zero a rifle scope. And in several discussions/ videos a drawing of the line of site of the scope intersecting with the 'highest' point in the bullet's trajectory at 100 yards (the zero distance) seems to me to be one of two scenarios. Isn't it possible (second scenario) that the line of site of the scope (if gun is stationary and reticle lowered more) could intersect the bullet's trajectory at two points ( A and B)? 'A' being a point along the bullet's ascent (before reaching its highest point along trajectory) and 'B' being a point along the bullet's descent? If so, in the first scenario, the gun would be zeroed at 100 yards, but in the second scenario it would be zeroed at a distance less than 100 yards and another distance farther than 100 yards. Am I understanding things wrong or am I presenting a valid point? If I'm correct, then the rule that a gun will always shoot 'low' if aimed at a target closer or further than the point of zero (100 yards in many explanations) would not always be true (if the second scenario applies). Right? Any advice would be appreciated.