Yes, it CAN do as claimed if you're sighted 5" high. Nobody I know sights in 5" high. That would require that you don't care where your bullet lands inside a 10" circle. Possible? Yes. Likely or common? Not by any means. That gives the shooter virtually zero room for error, at that max high/low distance. Most shooters have some error.
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Nobody plans to screw up their lives...
...they just don't plan not to.
-Andy Stanley
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