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Author Topic: round ball BC  (Read 1008 times)

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Offline jgalar

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round ball BC
« on: April 01, 2004, 03:52:54 PM »
Does anyone know the ballistic coefficient for round balls? I am primarily looking for 32 and 50 caliber.
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Offline dodgecity

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round ball BC
« Reply #1 on: April 01, 2004, 04:31:05 PM »
According to my old Lyman book, the BC for a .319 ball is .045, and the BC for a .495 ball is .070. If you want to compute the BC for a specific diameter ball, go to the "mathematical shooter" site. I'm sure they will have a formula....... Regards, DC
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Offline Longcruise

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round ball BC
« Reply #2 on: April 06, 2004, 06:58:59 AM »
Also, there's different BC's for different ballistic tables.  My favorite is the William Frenchu Ballistic Ver 4.3.  It has five different drag tables, one of them being the British Round Ball Table.  The documentation contains the formula for figuring the BC for Brit Round table.
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Offline jgalar

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round ball BC
« Reply #3 on: April 15, 2004, 12:20:15 PM »
found some BC numbers:
.310=.043
.350=.049
.440=.062
.490=.068
.535=.075
.570=.080
.715=.097
.315=.044
.375=.053
.451=.064
.457=.064
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Offline Omega

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round ball BC
« Reply #4 on: April 16, 2004, 02:05:34 PM »
Most the tables I work with show a range of BC's for a RB projectile. With RB's especially BC is speed dependant.
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