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Bartholomew Roberts · February 8, 2019, 12:41 PM

Interesting that AAC dropped its 1:8 twist for 9” barrels and went to a 1:7 twist for 9” barrels then. Based on what you are saying, a .30 bullet that fits in an AR15 magwell and doesn’t stabilize in a 1:8 9” barrel doesn’t exist. So why change?

February 8, 2019, 12:41 PM	#7
Bartholomew Roberts Senior Member Join Date: June 12, 2000 Location: Texas and Oklahoma area Posts: 8,442	Interesting that AAC dropped its 1:8 twist for 9” barrels and went to a 1:7 twist for 9” barrels then. Based on what you are saying, a .30 bullet that fits in an AR15 magwell and doesn’t stabilize in a 1:8 9” barrel doesn’t exist. So why change?