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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to true the BC
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<blockquote data-quote="7.62 Gunner" data-source="post: 2542833" data-attributes="member: 121641"><p>I use the Hornady ballistics app, the other week when I tested the 180 eldms at 1340 I'd chronoed the velocity at 2820.</p><p>I impacted approx 1 moa low, and after reducing the velocity by 20 fps everything jived. I was having the same issue with low impacts from Bergers as well which also were due to inflated velocity.</p><p></p><p>I did a tracking test on my scope to verify it was calibrated, definitely do a tall target test if you haven't already. </p><p>I believe hornady uses an average BC that's lower than .796 in their calculator, I'd be curious how the Hornady app compared to what your calculator is saying.</p></blockquote><p></p>
[QUOTE="7.62 Gunner, post: 2542833, member: 121641"] I use the Hornady ballistics app, the other week when I tested the 180 eldms at 1340 I'd chronoed the velocity at 2820. I impacted approx 1 moa low, and after reducing the velocity by 20 fps everything jived. I was having the same issue with low impacts from Bergers as well which also were due to inflated velocity. I did a tracking test on my scope to verify it was calibrated, definitely do a tall target test if you haven't already. I believe hornady uses an average BC that's lower than .796 in their calculator, I'd be curious how the Hornady app compared to what your calculator is saying. [/QUOTE]
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How to true the BC
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