Twist Rates and Bullet Weights .223 Stability Test

Pretty much confirms what I've researched. Although, 1/9 seems to be right on the edge for 75gr. bullets. I've heard it's hit or miss depending on the gun. I have a 1/9 that seems to do fine with 75gr. I'd like to test the 77gr.
 
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My rig is equipped with a 16" BA Hanson S/S middy, 1/8, and it has done well with anything from 62 to 77.
 
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