From the time a firearm is grasped in the hand, the shooter becomes a part of a system over which the shooter has complete control. The shooter is the only part of the system that can make a gun safe – or unsafe.
Hunting and target shooting are among the safest of all sports. This study is intended to make them even safer by re-emphasizing and reaffirming the basics of safe gun handling and storage and by reminding each individual shooter that he or she is the key to firearms safety.
You can help meet this responsibility by constantly stressing safety when handling firearms, especially to children and non-shooters. Newcomers in particular must be closely supervised when handling firearms with which they may not be acquainted. Don’t be timid when it comes to gun safety. It you observe anyone violating any safety precautions, you have an obligation to suggest …
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An injury to the muzzle of a rifle can cause shots to keyhole. This condition is most likely to occur in rifles cleaned from the muzzle, but may be due to accident, such as striking the muzzle against any metal.
A very small burr on the muzzle crown can make the bullets unstable in flight.
Anything that reduces the rotations per second may cause a bullet to tip. Low bullet velocity may reduce the spin enough to cause this effect. A long bullet requires more spin than a short one, so that too long a bullet for the twist or too slow a twist for the bullet may cause tipping. Excessive wear of the rifling or too loose a fit of the bullet in the barrel may cause the bullet to fail to take the full spin required.
As barrel erosion progresses, the portion of the barrel just …
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Ammunition is Effected by Temperature
Temperature has a marked effect on both velocity and pressure. Factory ammunition is, as a rule, rather conservatively loaded so that no danger will result even under extremes of temperature.
Twenty years ago a large quantity of 6.5 x 55 ammunition was imported into Australia, (I was responsible for a few million round of it) It was 139 grain FMJ brass case with a berdan primer I suspect made by Norma in Sweden. In normal conditions it was excellent ammunition. (I once shot a five shot.500 inch group at 200m with it). There were reports that it had blown up guns, on investigation this was not the same ammunition only the same calibre. It got everybody talking though.
A southern importer had imported blank ammunition in this calibre and had replaced the wooden blank projectiles with 140 grain soft points. This would not have been …
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Exploding Barrel Blockages
Obstructions in a firearm barrel are almost certain to damage the barrel on firing.
The kind and amount of damage depend on location of the obstruction, on its mass (weight), and on the type and thickness of the barrel. A very great variety of results are possible. I have known of them killing the shooter next on the firing line, and only giving the owner of the firearm a sore shoulder. This is the extreme but it can and does happen.
An obstruction close in front of the cartridge in the chamber has the effect of increasing the chamber pressure. An obstruction in the middle or forward part of the barrel produces a local injury.
The action of an obstruction does not depend on trapping air. Experiments with coils of wire and other open obstructions resulted in damage about the same as solid obstructions of …
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