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Old February 8, 2014, 09:22 AM   #72
Jimro
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Join Date: October 18, 2006
Posts: 7,097
rdavidsonjr, paragraphs are your friend.

Quote:
My son in the Marine Corp said that the 6.5 is more accurate than the M16 5.56. The only reason it has not been replaced is the cost of research to supply the huge needs and materials to train the Corp to most effectively use them.Also there is already a huge investment in arms and ammo already on hand. to do a complete change out would be at a huge cost in replacement and training. All Marines must qualify on the M16 5.56 at 100,200,300,500 yards. It has been found that 90 % score better at 500 than any other range. Why? Reason: The bullet is not totally stable and in a perfect spiral till after 300 yards.
The "reason" given is bogus. Bullets are never "perfectly stable" at any point in flight as all bullets experience yaw, precession, nutation, etc, that gives them "wobble" along the flight path. Initial instability is vastly reduced by the time a bullet passes 100 yards.

The real reason Marines shoot better at 500 is that the 500 yard portion of the USMC is the ONLY prone portion of the qualification course. The shooters shoot better from the prone position, not the rifle. http://www.usmcweapons.com/the-m16a2...cation-course/

Secondly, the 5.56 cartridge is perfectly capable of superb accuracy and you can't compare a rack grade gun designed for war with a custom made rifle designed for accuracy.

Jimro
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Last edited by Jimro; February 8, 2014 at 09:43 AM.
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