SIG SAUER 1911 .22LR - Manual (Page 18)

18 www.sigsauer.com
3. Firearms may be severely damaged and serious injury to the shooter or
to others may result from any condition causing excessive pressure inside
the chamber or barrel during firing. Excessive pressure can be caused by
obstructions in the barrel, propellant powder overloads, the use of incorrect
cartridges, or defectively assembled cartridges. In addition, the use of a
dirty, corroded, or damaged cartridge can lead to a burst cartridge case and
consequent damage to the firearm and personal injury from the sudden
escape of high-pressure propellant gas within the firearm’s mechanism.
4. Immediately stop shooting and check the barrel for a possible obstruction
whenever:
• You have difficulty in, or feel unusual resistance in, chambering a cartridge
• A cartridge misfires (does not go off)
• The mechanism fails to extract a fired cartridge case
• Unburned grains of propellant powder are discovered spilled in the
mechanism
• A shot sounds weak or abnormal. In such cases it is possible that a bullet
is lodged partway down the barrel. Firing a subsequent bullet into the
obstructed barrel can wreck the firearm and cause serious injury to the
shooter or to bystanders
5. Bullets can become lodged in the barrel:
• If the cartridge has been improperly loaded without propellant powder,
or if the powder fails to ignite (ignition of the cartridge primer alone will
push the bullet out of the cartridge case, but usually does not generate
sufficient energy to expel the bullet completely from the barrel).
• If the bullet is not properly seated in the cartridge case. When such a
cartridge is extracted from the chamber without being fired, the bullet
may be left behind in the bore at the point where the rifling begins.
Subsequent chambering of another cartridge may push the first bullet
further into the bore.
11SIG422_1911_22LRmini_manual.indd 18 8/3/11 4:06 PM