Ballistic Coefficient: Spheres?

Daniel Watters · September 4, 1999, 09:13 AM

I haven't been able to put my fingers on this bit of information. What would the ballistic coefficient be for an unmarred/unrifled round ball (as in buckshot or a smoothbore muzzle loader)?

bfoster · September 4, 1999, 09:28 AM

You've opened a real can of worms. It depends on the calibre of the sphere and on what table of b.c.'s you are using: Gs or an approximation in G1. Bob

Daniel Watters · September 4, 1999, 10:25 AM

Okay, let us say we are looking at a 00 Buck pellet (.33") on the G1 table.

bfoster · September 4, 1999, 02:09 PM

Daniel,

Try 0.045 at suprsonic velocities, 0.037 in the transsonic region, & 0.031 for subsonic speeds. You'll have to determine the speed of sound for your ambient conditions. Bob

Daniel Watters · September 4, 1999, 10:15 PM

Thanks for the help, Bob.

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September 4, 1999, 09:13 AM	#1
Daniel Watters Senior Member Join Date: February 7, 1999 Location: USA Posts: 644	I haven't been able to put my fingers on this bit of information. What would the ballistic coefficient be for an unmarred/unrifled round ball (as in buckshot or a smoothbore muzzle loader)?

September 4, 1999, 09:28 AM	#2
bfoster Senior Member Join Date: October 13, 1998 Location: N. of Fords Switch, OK, USA Posts: 297	You've opened a real can of worms. It depends on the calibre of the sphere and on what table of b.c.'s you are using: Gs or an approximation in G1. Bob

September 4, 1999, 10:25 AM	#3
Daniel Watters Senior Member Join Date: February 7, 1999 Location: USA Posts: 644	Okay, let us say we are looking at a 00 Buck pellet (.33") on the G1 table.

September 4, 1999, 02:09 PM	#4
bfoster Senior Member Join Date: October 13, 1998 Location: N. of Fords Switch, OK, USA Posts: 297	Daniel, Try 0.045 at suprsonic velocities, 0.037 in the transsonic region, & 0.031 for subsonic speeds. You'll have to determine the speed of sound for your ambient conditions. Bob

September 4, 1999, 10:15 PM	#5
Daniel Watters Senior Member Join Date: February 7, 1999 Location: USA Posts: 644	Thanks for the help, Bob.