Re: 175g uld rbbt testing at 800 yards
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Not to steal the post, but I was under the understanding that Altitude doesn't effect bullet flight in and of itself, the Barometric Pressure decreases as you increase altitude and that is what causes different impacts.
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You are right. It is the local pressure that determines the drop - with most programs, if you enter local (station) pressure, you must set altitude to "0" feet AMSL, or you will get double the altitude, cuz the program also compensates at the same time.
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LRH member #23