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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
280 AI Ballistics: I need help, I am Confused
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<blockquote data-quote="Santiam338" data-source="post: 1875360" data-attributes="member: 87532"><p>I had a scope that tended to hit high..Speeds and BC were correct.. MIL scope so I made a tall target with the zero at the bottom,another dot at 5 mils up,or 18 inches and another dot at 36 inches,or 10 mil.. After making sure the target was exactly 100 yards and the line running up level,I fired groups at the bullseye,then dialed up 5 mils and fired another group at the zero dot...Repeated at 10 mils,still aiming at the bottom dot..</p><p></p><p> The 5 mil group cluster one inch above where they were sposed to be while the 10 mil grouped at 38 inches above zero,a full 2 inches high.</p><p></p><p> I then divided 36 inches by 38,which gave me a correction factor of .947.. </p><p></p><p> .947 is the error in the tracking of my scope.. It is consistent though... I entered the error into my shooter app and after that no more problems...My app and scope were talking the same language..</p><p></p><p>I don't believe in adjusting speeds and BC's that are wrong trying to make things fit...Better to find the real problem and solve it..</p><p></p><p> Before I did one more thing I would run this test and see exactly what your scope is doing..</p><p></p><p> Good Luck.</p></blockquote><p></p>
[QUOTE="Santiam338, post: 1875360, member: 87532"] I had a scope that tended to hit high..Speeds and BC were correct.. MIL scope so I made a tall target with the zero at the bottom,another dot at 5 mils up,or 18 inches and another dot at 36 inches,or 10 mil.. After making sure the target was exactly 100 yards and the line running up level,I fired groups at the bullseye,then dialed up 5 mils and fired another group at the zero dot...Repeated at 10 mils,still aiming at the bottom dot.. The 5 mil group cluster one inch above where they were sposed to be while the 10 mil grouped at 38 inches above zero,a full 2 inches high. I then divided 36 inches by 38,which gave me a correction factor of .947.. .947 is the error in the tracking of my scope.. It is consistent though... I entered the error into my shooter app and after that no more problems...My app and scope were talking the same language.. I don't believe in adjusting speeds and BC's that are wrong trying to make things fit...Better to find the real problem and solve it.. Before I did one more thing I would run this test and see exactly what your scope is doing.. Good Luck. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
280 AI Ballistics: I need help, I am Confused
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