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Long Range Hunting & Shooting
Newbie trajectory validation
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<blockquote data-quote="Shortmagman" data-source="post: 821370" data-attributes="member: 10723"><p>According to my Sierra Infinity ballistic program, a 7mm 168 grain Berger VLD with a velocity of 2800 ft/sec needs to be 8.85 inches high at 100 to be dead on at 550 yards. So you are probably not getting the 2950 ft/sec velocity that you think. Your 9 moa is about perfect for just over 2800 ft/sec.. I also checked with the Hogdon web site and they show that 65 grains of H4831 under a 170 grains bullet produces just over 2800 ft/sec.. I don't know the barrel length but I think again that you are in the 2800 ft/sec neighbor hood.</p></blockquote><p></p>
[QUOTE="Shortmagman, post: 821370, member: 10723"] According to my Sierra Infinity ballistic program, a 7mm 168 grain Berger VLD with a velocity of 2800 ft/sec needs to be 8.85 inches high at 100 to be dead on at 550 yards. So you are probably not getting the 2950 ft/sec velocity that you think. Your 9 moa is about perfect for just over 2800 ft/sec.. I also checked with the Hogdon web site and they show that 65 grains of H4831 under a 170 grains bullet produces just over 2800 ft/sec.. I don't know the barrel length but I think again that you are in the 2800 ft/sec neighbor hood. [/QUOTE]
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