“accuracy”

Barrel Twist Rate, Decoded: 1:7 vs 1:8 vs 1:9 for .223/5.56 October 27, 2025 TL;DR: For .223 Rem/5.56 NATO, 1:7 stabilizes the heaviest bullets (75–80gr+), 1:8 is the most versatile (55–77gr), and 1:9 favors lighter loads (40–69gr). Choose based on the ammo you actually shoot, not what looks cool on a spec sheet. Twist rate