Mossberg 590 User Manual
Page 7

The firearm is now loaded and will fire if the safety is moved to the “off” (fire)
position and the trigger is pulled. Keep the muzzle pointed in a safe direction at
all times.
5
loaDing
Before loading, move the safety button fully rearward (Fig. 2) to the “ON” (SAFE)
position.
During loading, never allow fingers or any objects to contact the trigger. Keep the
muzzle pointed in a safe direction at all times.
Depress the action lock lever (Fig. 3) and open the action by pulling the forearm
completely rearward.
Do not load firearm until ready to use! Unload firearm when shooting has been
completed! The safety button should always be fully rearward in the “ON” (SAFE)
position whether or not the firearm is loaded.
Inspect the chamber and bore of the barrel for any obstruction, excessive oil or grease.
(The chamber is the rear portion of the barrel which contains the cartridge (Fig. 4).)
Obstructions of any kind can cause damage to the firearm and may result in
serious personal injury to the shooter and/or others nearby.
Check to be certain that the ammunition selected is the same type of cartridge as
designated on the left side of the barrel.
835
®
models are designated to fire 12 gauge 2-3/4”, 3”, or 3-1/2” factory loaded ammunition.
Do not fire slugs of any type (single projectile ammunition) through the overbored
835
Accu-Mag barrel. This barrel is designated to shoot lead or steel pellet shot loads only. Use
only
835 barrels designated specifically for slug shooting.
535
™
models are designed for factory loaded 2-3/4”, 3”, and 3-1/2” shells and rifled
slugs.
590
®
models handle 12 ga. 2-3/4” or 3” magnum shells. 500
®
and 505
™
models
are designed for 2-3/4” (2-1/2” .410 bore) and 3” magnum shells within gauge.
Fully rifled barrels deliver best accuracy with sabot style slugs. “Rifled” slugs and shotshells are
not recommended for use in rifled barrels.
If you wish to load the firearm with the maximum number of shells, or fire single shots, load the
first shell through the ejection port located on the right side of the receiver (Fig. 5). The shell can
be inserted directly into the chamber or placed on top of the elevator. Close the action by moving
the forearm completely forward. Be sure to leave the safety “ON” (fully rearward) until you are
ready to shoot.