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Old September 26, 2013, 02:11 PM   #3
kraigwy
Senior Member
 
Join Date: June 16, 2008
Location: Wyoming
Posts: 11,061
The 1:7 is perfect for an AR in my opinion. it will shoot anything from 50-90 gr bullets just fine.

The Army uses the Mann Accuracy Device to test their ammo. They use 52 Gr SMK loads as a control. The Mann Device is a 1:7.

Only problem you'll have is using light 40 gr bullets for the Hornet and Hornet velocities.
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Kraig Stuart
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USAMU Sniper School Oct '78
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