Does it give it some sort of added benefit like traveling further vs no spin? Why does that happen physics wise?
In: 6
Stability. basically, bullets can tumble and having a twist creates a stable projectile.
A 55 grain bullet going through a barrel with a 1:6 twist (1 twist for 6 inches of barrel) is going to be spinning around faster and cause instability it might not tumble, but you might not be getting the accuracy or results you want when hitting a target.
Take That same 55 grain bullet and put it In a 1:9 twist barrel the bullet will be rotating slower and less likely to fly off target. Because of Slower rotation.
Bullets that rotate will fly farther, they use the rotational force given from the rifled barrel to stay slightly aloft, more “hang time” for lack of better term. Best example I can give is hold a bike wheel by the axel and spin it. The direction it spins is where the force is applied typically up and to the right slightly, most barrels I believe are rifled clockwise. So the bullet will have a tendency of up and to the right. This is fixed by adjusting your sights to the point of impact on your target
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