Ruger Caulking Gun - Manual (Page 17)

If a cartridge hangs up, jams, or binds
when being chambered or when the
breech block is closed,
do not attempt to
force it into the chamber by pushing or
striking the lever.
Most failures of a
cartridge to feed or to chamber are caused
by ammunition that is incorrect, dirty, or
defective.
Whatever the cause, the gun user must,
above all, recognize that jams can result
in the very potentially dangerous situation
of a cartridge discharging before it is
chambered. If this occurs, the cartridge
case will rupture and its fragments will fly
out of the gun with sufficient force to
cause injury. Always wear shooting glasses
and hearing protectors!
STRIKING PRIMER CAN
BURST CARTRIDGE
17
–After clearing a jam, inspect the gun mechanism to determine if dirt might
be the cause of the problem. Excess lubricant or grease can cause
cartridges to feed sluggishly or fail to extract. An accumulation of grease or
dirt on the face or sides of the breech block, under the extractor, or in the
chamber can contribute to cartridge feeding problems. (See section on
“Care and Cleaning,” p. 20.)
–After clearing a jam, inspect all cartridges that have been removed from
the gun. Safely dispose of any cartridges which are in any way damaged.
–If it appears that the rifle is not at fault and that the jam was caused by the
type of cartridge being used, then try another type.
–Examine your fired cartridge cases. If they have split, blown or bulged
heads, stop using that ammunition and promptly return the rifle to the
factory for examination.
–If the above procedures do not result in a smooth and reliable feeding
firearm, don’t use the rifle. The RUGER ® NO. 1 can be returned
directly to our Newport Product Service Department for inspection and
repair, if required. See the “Service and Parts Policy” section of the manual
for packing and shipping information.
WARNING – MALFUNCTIONS
TO MINIMIZE MALFUNCTIONS (“JAMS”)
Firearms of all makes and types are susceptible to occasional malfunctioning due
to a cartridge not feeding into the chamber, or due to a cartridge or fired case
not being extracted and ejected.