When should I replace my barrel?

As a rule of thumb, when the wear in an injection barrel reaches 0.020 in., it is time to repair or replace the barrel. For critical molding applications, the cutoff point may be as low as 0.003 in. In extrusion barrels, by contrast, the level of wear can range up to 0.250 in.

When can you look down the barrel of a gun?

There are a few instances when it’s acceptable to look down the barrel. If you are competent with the firearm you are handling, you have cleared the weapon, and it has not left your possession, then it is safe to look down the barrel. Another instance when you can inspect the barrel is when the weapon is disassembled.

What causes a bullet to keyhole?

A conical projectile will keyhole if it is not properly stabilized. This can happen if the rifling twist is too slow for the length of the projectile( the longer the bullet the faster twist is needed.) If the rifling is worn out it won’t grip the bullet enough to impart the proper spin.

How long does a gun barrel last?

Short answer: it depends on a bunch of things, probably somewhere between 500 and 500,000 rounds. The question is kind of like “how long does an automobile engine last?” Fewer than 1,000 probably means bad maintaining and misuse; more than 10,000 means very good maintaining and careful use.

Can you replace a gun barrel?

Most shooters will never have to worry about replacing a barrel, but they may eventually need to be replaced. If you’re not shooting past 25 yards, you may never notice the decrease in accuracy, but it’s still a good idea to replace the barrel to extend the overall lifespan of the gun.

What does examine the bore mean?

EXAMINE. Step five is to examine the inside of the barrel (the bore) for obstructions. Due to the tremendous pressure that expels a bullet out the barrel, any obstruction in the barrel would not allow the aerodynamic pressure built up in front of the bullet to be released safely out the muzzle.

Why is my gun Keyholing?

Keyholing is a sign that the bullets are not being stabilized properly. If a gun shoots maybe one keyhole in 500 shots, it may just be due to a bad bullet, but if it regularly shoots keyholes, then that means there is a problem with the barrel or bullets or both, which needs to be fixed.

What is Keyholing when shooting?

Keyhole or keyholing: Refers to the end-over-end tumbling of the bullet which will often leave an elongated or keyhole shaped hole in a paper target.