This guide explains the critical concept of AR-15 and M16 barrel twist rates, detailing how different rates (1:12, 1:9, 1:8, 1:7) are optimized for specific bullet weights and applications. Understanding twist rate is essential for achieving optimal accuracy and stability, especially when selecting ammunition for varmint hunting, general use, or long-range precision shooting. The information is presented by a Brownells expert, emphasizing practical application for firearm owners.
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