OK so I ran some numbers for a 140gr SP at 2700fps. If its 6" high at 100m then at 200m its a bit over 7" high before dropping to be zeroed at 300m.
Reason being is the bullet (in this example) reaches the top of its trajectory curve around 175m before starting to drop.
Same bullet and velocity shooting 2" high at 100m should be zeroed at 200m. Top of trajectory in this case is at around 100m.
Assuming a scope height of 1.6" above the rife bore.
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