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Old October 11, 2007, 04:05 PM   #1
314EPW
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True muzzle velosity??

Your crony is set at 15 feet(5 yds),fps is 1500.What is fps it at the barrel?
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Old October 11, 2007, 05:04 PM   #2
rwilson452
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it depends on the BC of the bullet
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Old October 11, 2007, 06:30 PM   #3
Alleykat
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Quote:
Your crony is set at 15 feet(5 yds),fps is 1500.What is fps it at the barrel?
1501.0869953 f.p.s.
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Old October 12, 2007, 05:02 AM   #4
314EPW
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math?

the bullet is 250 gr.the bc is .147.Since the bullet will be slower at 25,50,100 etc. I thought there would be a way to do the math the other way.to get true muzzle vol.
thanks Ed
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Old October 12, 2007, 05:44 AM   #5
.45 COLT
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The calculator I use says 1521.3 FPS

http://www.eskimo.com/~jbm/calculations/traj/traj.html

DC
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Old October 12, 2007, 12:05 PM   #6
314EPW
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great help!

Thanks .45 Colt.I knew it was out there.Just couldn,t remember where ,or why or old age......
thanks again for your help
Ed
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Old October 12, 2007, 06:44 PM   #7
Alleykat
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I was just recalling from memory.
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