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kraigwy · September 26, 2013, 02:11 PM

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.

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. __________________ Kraig Stuart CPT USAR Ret USAMU Sniper School Distinguished Rifle Badge 1071