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Hi two Jeffs....just got the latest copy of New Zealand guns & hunting magazine with an article on the Remington 6.8 mm SPC being trialed by US military. Said to be "The brainchild of a special forces soldier, Sergeant Major Steve Holland whoes goal was to improve the performance of the short barreled M4 carbine.....especially under conditions of cold weather and at high altitudes."
1, At 100yds the 6.8mm has 78% more energy than 5.56mm M193
2, Trajectory is almost identical to 7.62 NATO out to 600yds
3, retained velocity is superior to the 5.56mm and identical to the 7.62 at 600yds
4, Projectile energy issuperior to the 5.56mm at all ranges & equels 7.62 at 600yds
5, Wind deflection is less than both out to 600yds
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