This chart provides a visual for which twist rates are best for most 5.56/.223 loads The numbers in each cell measure gyroscopic stability Faster rates produce higher factors Factors between 1.5 and 2.0 are ideal for all bullets and calibers Factors between 1.0 and 1.3 are marginally stable Factors between 2.1 and 2.9 are considered fast, but still stable and highly accurate
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