Go Little heavier? Give a try. For those of you who knew all about this already, take a moment and share this on Facebook and Twitter and tag a couple friends that could use the little lesson! Happy shooting! Back then no one imagined shooting long, skinny, aerodynamically efficient grain bullets in the. Today, handloaders build custom. Those need twists to stabilize. Gunsmiths appreciate the rebarreling business. If, however, you want to shoot long, high B.
Hornady, for example, recommends a or faster twist barrel for its. Berger recommends the same for its grain. The current fad toward long range shooting has led to ever longer, more ballistically efficient bullets.
Fast-twist barrels are necessary to stabilize those in any caliber. Weapons are some of our most culturally and emotionally potent artifacts. The choice of gun can be as personal as the car one drives or the person one marries; another expression of status, education, experience, skill, and personal style.
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Comment Name Email Website. Sporting Classics Podcast. However, end users utilize a variety of different types of ammunition in their firearms; so usually it makes sense to optimize specifically not for a single projectile but rather for a range of different types of bullets. So what happens if the twist rate is too high or too low? When the projectile is not spun quickly enough, it may not be sufficiently stabilized in flight; then it begins to yaw and tumble, destroying its accuracy.
On the other hand, excessive twist rates can affect accuracy, accelerate wear and even rip jackets apart and cause projectiles to disintegrate. The popularity of the AR platform and the wide variety of different. Anyone who decides to build up their own upper will need to decide between an array of barrel choices. Consider the range of ammunition you intend to use for your specific applications, and choose a barrel configuration to match.
Ever wonder how those rifling grooves can be made so precisely? Some common methods for producing rifled barrels include the following:. Grab a cleaning rod, jag and patch. The rod should spin freely in its handle, and the jag and patch should fit snugly in your barrel. In general, a longer bullet requires a tighter rate for sufficient flight stability. Twist rate tends to be a point of hot debate among shooters, especially those using AR weapons.
Like most legends, there may be at least a grain of truth to these popular myths. One of the biggest concerns is that by over-twisting a bullet, it could fly apart in mid-air. Although this is possible in theory, it is highly unlikely.
It would be well-nigh impossible to spin a bullet to the point of fragmentation out of a short-barreled rifle, particularly in the standard calibers ARs are chambered in. As a side note, the chances of your projectile shattering in mid-air increase when you shoot frangible bullets. If you plan to hunt varmints with your AR, you might want to err on the side of caution and stick with a less aggressive or twist rate. Exploding bullets and apocalyptic horsemen aside, twist rate is still important.
Standard rifles used by the United States military, typically have a twist rate of This is a pretty aggressive rate, but it works well to stabilize the heavier projectiles used in modern combat zones. Most modern civilian sporting rifles will never see combat. This is one reason private citizens have access to AR-style rifles with a variety of twist rates. Most modern, short-barreled ARs come in three basic twist rates: , , and If you want a mil-spec rifle, the barrel runs ammo loaded with a 62 grain projectile like a dream.
This rate of twist can also handle even heavier bullets up to a hefty 90 grains. The twist barrel is the most versatile of the bunch. This twist rate gives you the most flexibility, effectively stabilizing projectiles up to 80 grains but not over stabilizing lighter ammunition.
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