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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
BC Article- Link
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<blockquote data-quote="eddybo" data-source="post: 358141" data-attributes="member: 7194"><p>I like the article, thought it was a good non-technical read. But 400 yards is not gonna tell you shinola about the BC of a bullet. Exbal does not like his numbers for his junk science. </p><p></p><p>I do like the fact that the writer recognizes that BC is not a number you just plug into your ballistics program and go hunting. You have to shoot the **** things. Pus you have to shoot them at ranges further than you would shoot an animal. I have seen all kinds of strange stuff happening to BCs at longer ranges 1400+. Most of it can be compensated for by using multiple BCs or different form factors, but very rarely do the numbers give you your drops perfectly.</p><p></p><p>One way I have learned to mitigate slight errors in BC is to sight my rifles in at longer ranges. For instance, I usually sight my rifles in at 787 yards. If exbal proclaims that I need 12MOA for 787 yards I loosen the screws turn my dial to 12 and tighten them down. I then dial back to zero and should be zeroed in at 100 yards. Sometimes I end up 1/4 MOA +or- at 100 but find that it sort of slits the difference in any errors so that errors are masked at ranges past my 787 sight in distance.</p></blockquote><p></p>
[QUOTE="eddybo, post: 358141, member: 7194"] I like the article, thought it was a good non-technical read. But 400 yards is not gonna tell you shinola about the BC of a bullet. Exbal does not like his numbers for his junk science. I do like the fact that the writer recognizes that BC is not a number you just plug into your ballistics program and go hunting. You have to shoot the **** things. Pus you have to shoot them at ranges further than you would shoot an animal. I have seen all kinds of strange stuff happening to BCs at longer ranges 1400+. Most of it can be compensated for by using multiple BCs or different form factors, but very rarely do the numbers give you your drops perfectly. One way I have learned to mitigate slight errors in BC is to sight my rifles in at longer ranges. For instance, I usually sight my rifles in at 787 yards. If exbal proclaims that I need 12MOA for 787 yards I loosen the screws turn my dial to 12 and tighten them down. I then dial back to zero and should be zeroed in at 100 yards. Sometimes I end up 1/4 MOA +or- at 100 but find that it sort of slits the difference in any errors so that errors are masked at ranges past my 787 sight in distance. [/QUOTE]
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BC Article- Link
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