![]() ![]() How tightly the rifling grooves are cut determines the "twist rate" that controls how fast the bullet spins. This spin is created by grooves, called "rifling," cut inside the barrel. Just as a quarterback throws a football with a spiraling motion to keep it stable in flight, a bullet must spin during flight to make it fly accurately. What Are Barrel Twist Rates, And How Does It Work? However, barrel twist rate can make a significant difference with long-distance shooting. ![]() For a home-defense gun where you will be firing, heaven forbid, at close range, the barrel twist rate won't make enough of a difference for the home intruder to notice. Knowing that firing a bullet down a barrel with a twist rate not optimized won't send the slug into space, but it can affect accuracy. Everyone has an opinion, and not all opinions are created equal. ![]() ![]() However, asking for advice about twist rates is like asking advice about the best deer hunting caliber. The reason barrels have different rates of twists is simply because different bullets perform best when given a specific rate of spin in flight. Many AR-15 shooters wonder why barrels have so many different twist rates and if twist rate really matters all that much. ![]()
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