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barrel length, barrel "whip" and accuracy

Started by Old Dog, January 26, 2009, 02:45:08 PM

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Old Dog

January 26, 2009, 02:45:08 PM
This came out of a long discussion at M14 Firing Line Public Forum about why some barrels are more accurate than others and why some lengths (even in the same caliber) just never seem to equal another length.  Basically it started out (I believe) as a question about the lesser accuracy of the SOCOM type M1A rifles vs. the longer barreled rifles.

I thought about what was being passed back and forth by the various contributors to the the thread (several of them knowledgeable M14/M1 match armorers) and came up with this.  When I posted it no one disagreed and some stated it pretty accurately described what was going on (vibration wise vs. accuracy) as barrel length changed.  While some folks will say shorter barrles are stiffer than longer barrels the trick is to have the muzzle at the same spot each time the bullet leaves the muzzle. 

"The rifle itself has no moral stature, since it has no will of its own. Naturally, it may be used by evil men for evil purposes, but there are more good men than evil, and while the latter cannot be persuaded to the path of righteousness by propaganda, they can certainly be corrected by good men with rifles."

—Jeff Cooper, The Art of the Rifle
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