User's Manual

AT308 - USER MANUAL

8. STOPPAGE AND TROUBLESHOOTING DRILLS (CONTINUED)

Obstruction in the chamber—failure to extract

If a live round or empty case is present in the chamber, this must be removed.

 Remove the magazine.

 Close the bolt fully.

 Set the safety to the ‘1st safe’ position.

 Open the bolt to clear the obstruction.

 Check chamber is clear.

 Refit the magazine.

 Pull the bolt fully rearwards, then push forwards and close.

 Set the safety to the ‘Fire’ position.

 Continue firing.

Should the above drill not clear the obstruction, check the bolt and extractor for damage.

Consistent failures to extract should be investigated by an Accuracy International qualified

gunsmith or armourer. A cleaning rod may be used to remove an EMPTY case only by carefully

inserting it into the bore from the muzzle end of the barrel.

ENSURE THE CLEANING ROD IS REMOVED FROM THE BARREL BEFORE

CONTINUING TO FIRE.

Slow burning primer/hang fire

If the round does not fire after 30 seconds, eject the round and inspect it. If the primer strike looks

positive, the round must not be used and be disposed of safely. Persistent problems must be

investigated and the ammunition batch should not be used until examined further.

Light Strike

This can indicate that the bolt was not fully closed. Ensure that the bolt is closed fully each time a

cartridge is chambered. The bolt may also require cleaning and light lubrication. If the problem

continues, stop using the rifle and have it examined by an Accuracy International qualified

gunsmith or armourer.

‘Pierced’ or ’Blanked’ Primer

Should the ejected empty case have a ‘pierced’ or ’blanked’ primer, the user should inspect the

firing pin tip for damage. If the firing pin is damaged or if the problem persists, have the rifle

examined by an Accuracy International qualified gunsmith or armourer.

Hard Extraction

Hard extractions can be caused by a number of factors. A heavily ‘fouled’ barrel and chamber is a

common cause. The rifle should therefore be cleaned regularly, as set out in the maintenance

section of this manual. The user should also inspect the bolt head and extractor for cleanliness

and or damage. Prolonged ’rapid’ firing may also cause hard extractions. If this is the case,

allowing the rifle to cool more frequently, if practical, may ease the problem.

Any other problems must be investigated by an Accuracy International qualified gunsmith or

armourer.