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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hornady 178 BTHP
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<blockquote data-quote="BryanLitz" data-source="post: 654529" data-attributes="member: 7848"><p>Actually Hornady's advertised BC is only about 5% higher than I measured:</p><p></p><p>My test results:</p><p>G1 BC: .502 (average from 3000 to 1500 fps)</p><p>G7 BC: .257 (valid for full supersonic range)</p><p></p><p>It's typical for advertised BC's to be about 5% high and it's not necessarily 'inflation'. Some companies test their BC's over shorter ranges, like 300 yards, so the G1 BC is skewed toward the higher speed value which is a higher BC. Since I publish average BC's from 3000 to 1500 fps, they tend to be lower than the high speed BC's, but more accurate/useful for long range shooting.</p><p></p><p>Of course this problem is much less of a problem with BC's referenced to the G7 standard because there is much less velocity dependence with G7 BC's.</p><p></p><p>-Bryan</p></blockquote><p></p>
[QUOTE="BryanLitz, post: 654529, member: 7848"] Actually Hornady's advertised BC is only about 5% higher than I measured: My test results: G1 BC: .502 (average from 3000 to 1500 fps) G7 BC: .257 (valid for full supersonic range) It's typical for advertised BC's to be about 5% high and it's not necessarily 'inflation'. Some companies test their BC's over shorter ranges, like 300 yards, so the G1 BC is skewed toward the higher speed value which is a higher BC. Since I publish average BC's from 3000 to 1500 fps, they tend to be lower than the high speed BC's, but more accurate/useful for long range shooting. Of course this problem is much less of a problem with BC's referenced to the G7 standard because there is much less velocity dependence with G7 BC's. -Bryan [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Hornady 178 BTHP
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