Does anyone know of any web sites that list BCs for bullets to use for shooting solutions in calculators? Thanks.
Source(s) For Bullet Ballistic Coefficients
- Thread starter Turkeytider
- Start date
the manufacturer of the bullets
and most ballistic calculators have about every bullet preloaded anyways
and most ballistic calculators have about every bullet preloaded anyways
Well, for example, Hornady .223 75grain BTHP Match. Hornady, on their website and in their standard calculator, only lists the G1 BC. I would like to use the G7 BC. Would that require special communication with Hornady or have I not used something correctly in their on line calculator?
I use whatever format they provide the bc in until Ive verified its wrong, it hasnt really ever been wrong. May have to adjust it a bit to line it up but it still works well enough.
If you must swap profiles and need a starting place I think the g1 will be about twice the g7 minus a hundredth and inversely the g7 about half what the g1 is plus a hundredth.
If you must swap profiles and need a starting place I think the g1 will be about twice the g7 minus a hundredth and inversely the g7 about half what the g1 is plus a hundredth.
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IN that case you most certainly are. Velocity is your primary driver there, adjust the bc in your solver and see what difference it makes, it takes a pretty darn sizeable change to put you off target at just 500.
My biggest bc correction ever was a .300 to .315, most standard bc adjustments if any would be like .300 to .305 just to get that target clal out at 1k to roll that one click down etc in the solver.
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JBM ballistics trajectory simplified https://jbmballistics.com/cgi-bin/jbmtraj_simp-5.1.cgi
Adjust velocity inside 600 to make the calculator line up there and then adjust the bc to get it to line up further out past that.
A standard 6.5 creed
VS a super version of that bullet, basically no change, 2" or a tenth of a mil only.
VS 100 fps which has twice the effect.
Speed is most critical.
Adjust velocity inside 600 to make the calculator line up there and then adjust the bc to get it to line up further out past that.
A standard 6.5 creed
VS a super version of that bullet, basically no change, 2" or a tenth of a mil only.
VS 100 fps which has twice the effect.
Speed is most critical.
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Another option would be to use 4DOF and run Hornady's "custom curve" again it's not going to matter that much at that distance.
That forum and database has been down for months, and does not seem to be coming back.
I also have been using this newer one which has even more bullets listed https://www.loaddevelopment.com/bullet-database/
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