Can you over twist a bullet?

It's always OK to spin a bullet faster than recommended, but not slower. One caveat is if the bullet is on the verge of failure, a much faster twist rate may put it over the edge but this is a rare problem.

What happens if you over spin a bullet?

“The problem with 'over-stabilizing' a bullet (by shooting it from an excessively fast twist rate) is that the bullet will fly 'nose high' on a long range shot. The nose-high orientation induces extra drag and reduces the effective BC of the bullet.” True or False, and WHY?

How does twist rate affect a bullet?

The lower the number of the twist, the faster the twist rate or the faster the bullet will spin. For example, a 1:8 twist will spin the bullet one revolution in 8 inches, whereas a 1:10” twist will spin a bullet one revolution in 10 inches.

Does twist rate affect accuracy?

The short technical answer is that barrel twist starts the bullet spinning at a given rate to stabilize the bullet. The rate has to be constant for the utmost accuracy. On the opposite end of the spectrum – Decreasing the twist rate will almost certainly result in a dramatic decrease in accuracy.

Is it possible to spin a bullet?

No. A bullet travels at a speed of around 1000 m/s, so the bullet's low mass and high energy (as it exits the gun) would negate any attempt from gravity to lure it in any direction.

Bullet Stabilization and Barrel Twist

Can you dodge a bullet?

Bullet dodging, Scientific American reports, is one such make-believe ability invented by Hollywood. Regardless of your speed and finesse, no human can dodge a bullet at close range. The bullet is simply traveling too fast. Even the slowest handguns shoot a bullet at 760 miles per hour, SciAm explains.

Is there a smart bullet?

In February, the “smart bullets” – . 50-caliber projectiles equipped with optical sensors – passed their most successful round of live-fire tests to date, according to the Defense Advanced Research Projects Agency, or DARPA.

What twist rate does the military use?

For those who are curious, Guns&Ammo notes that the military uses the 1:7 twist rate. So, why do you want a faster twist rate or a slower twist rate? The answer is simple: bullet weight. There are a wide variety of bullet weights available, anywhere between 30 and 80 grains, in the extremes of the 5.56 mm NATO/.

What grain bullet is best for 1 in 7 twist?

While 62-grain bullets prefer a rate of twist around 1:8, 77-grain bullets weights favor a 1:7 twist rate.

Is faster twist better for heavier bullets?

Faster spins are good for longer bullets as they need more spin to stabilize their center of gravity. Often times, shooters choose tighter twist rates for heavier bullets. This can make shooters think that it is the weight of the bullet that requires a certain twist rate.

Whats better 1/7 twist or 1/8 twist?

It is absolutely true that heavier, longer bullets in the 69-85 grain flavors like faster rifle twists of 1:8, or 1:7. When someone tells you, “if you want to shoot some operator level Mk262 77 grain OTM ammo, you need a 1:7 twist”, believe that they have your best interest at heart.

What twist rate for 5.56 is best?

For most loads, 5.56 NATO and . 223 Rem do best with a 16" barrel and 1:8 twist rate. For . 308 and 7.62 NATO, a 20" barrel and 1:12 twist rate works best for all loads.

Which twist rate is best?

Most modern AR-15 barrels will come in three twist rates: 1:9, 1:8, and 1:7. The 1:9 barrel is best for stabilizing lighter and mid-weight bullets between 45 and 77 grains. The 1:8 twist barrel is the most versatile of the bunch, the perfect option for16-inch carbine AR-15 (the most common configuration on the market.)

What RPM does a bullet spin?

Bullet spin

A bullet fired from a rifled barrel can spin at over 300,000 rpm (5 kHz), depending on the bullet's muzzle velocity and the barrel's twist rate.

Why are spinning bullets more accurate?

Rifling helps impart a spinning motion to a bullet when it's fired. A spinning bullet is much more stable in its trajectory, and is therefore more accurate than a bullet that doesn't spin. This is exactly why is is better to throw a football in a spiral.

Why does spin stabilize a bullet?

To stabilize such projectiles the projectile is spun around its longitudinal (leading to trailing) axis. The spinning mass creates gyroscopic forces that keep the bullet's length axis resistant to the destabilizing overturning torque of the CP being in front of the CM.

What is a green tip bullet?

Green-tip ammunition is most common in 5.56/. 223 Rem caliber and is mainly designed for use with the AR platform. These rounds were originally considered controversial, as they meet one of the criteria of the federal definition of armor-piercing ammunition.

What grain 5.56 does the military use?

The U.S. military currently uses a round with a 62-grain bullet in its M-16s. The FN SCAR, used by Special Operations Forces, comes in both the 62-grain 5.56 NATO or a much heavier 7.62 mm. Snipers and crew-served weapons also use the heavier round.

What is the best bullet weight for a 1 in 8 twist?

1-in-8 Inches Twist Rate

For a 16-inch general-use carbine, the 1-in-8 twist is about as versatile as it gets. This twist rate will comfortably stabilize bullets up to 80-grains, and the excellent 75- and 77-grain bullets also work great at a wider spectrum of velocities — which means barrel length isn't critical.

Does a faster twist rate affect velocity?

After all the smoke cleared, we found that muzzle velocity correlates to twist rate at the rate of approximately 1.33 fps per inch of twist. In other words, your velocity is reduced by about 5 fps if you go from a 1:12” twist to a 1:8” twist.

What is the twist rate of the M16?

Originally, the M16 rifle had very different rifling: right-hand twist, 4 grooves, 1:14. Later, the grooves became 6. Currently, the twist is 1:7. Civilian M16-dopplegangers have a twist rate of 1:9.

What grain bullet is best for 1 in 8 twist 6.5 Creedmoor?

The 130 grain weight class of bullets is a very good choice for anything out to 600 to 800 yards. Beyond that I would go with the 140 grain or heavier class bullets.

Do laser guided bullets exist?

Engineers in the US have invented a bullet that directs itself to a target like a tiny guided missile and can hit a target more than a mile away.

Do Tracker bullets exist?

The M856 tracer cartridge (63.7-grain bullet) is used in the M16A2/3/4, M4-series, and M249 weapons (among other 5.56mm NATO weapons). This round is designed to trace out to 875 yards and has an orange tip color, and is trajectory matched to the M855 (62-grain, green tip) ball cartridge.

What is a DARPA round?

The DARPA EXACTO program uses different methods from Sandia's guided round. It relies on remote-guidance tied to the optics, which may be more reliable than Sandia's laser guidance method of painting the target with a laser for their projectile to follow, which can be detected, diffused, or blocked.