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![]() | #1 |
Member Join Date: Oct 2011 Location: Florida
Posts: 51
| Brain Teaser (not)
I know this is a pistol forum...but I've been teaching a young man who shows awesome potential, stemming from his natural ability. Before I start letting him sling lead downrange...I've been 'schooling' him on the basics of ballistics. Here is a question I threw together to test his reasoning...see how many of you can answer it (without Googling it)..LOL Question Setup: For best accuracy at a given range, barrels should be matched to a particular bullet type and weight and fired at an optimum velocity. Question: Each bullet has a specific ballistic coefficient based on sectional density and aerodynamic coefficient. As the ballistic coefficient designation increases, will the ideal twist rate increase or decrease? It's actually not a difficult question to answer...but I've never seen this asked in almost 60 years of shooting and the study of ballistics. HAVE FUN! |
![]() | #2 |
Senior Member Join Date: May 2006 Location: near Huntsville, Ala.
Posts: 707
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IIRC, increasing ballistic coefficient results in a longer bullet if all other factors are equal. And such longer bullet requires a faster twist. If some of the 'other factors' are not the same or essentially so, then sometimes the same or even slower twist is mandated. |
![]() | #3 |
Member Join Date: Oct 2011 Location: Florida
Posts: 51
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Sorry Dave...I can't do that... (had to borrow that line...LOL) No...the longer bullet needs a faster twist rate...just read the history of the 5.56 NATO round and the M-16... |
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Thread | Thread Starter | Forum | Replies | Last Post |
The seeds of an idea have been planted in my brain... | thefumegator | Browning Pistols | 2 | 12-17-2003 08:53 PM |