Fresh doubts have emerged over the accuracy of Victoria Police’s gun registry after an internal report found dozens of firearms were “lost”.

The Age can reveal that an audit of nearly 1000 firearms - conducted by the police’s Licensing and Regulation Division - discovered 81 guns could not be accounted for.

The findings of the audit came to light after firearms dealer Ross Barlow lodged a complaint with Professional Standards Command alleging dozens of his guns had gone missing after they were seized by police in 2014 when his licence was revoked.

The accuracy of Victoria's firearms registry is under a cloud.

An internal review of his 911 guns on the registry - conducted last year by Superintendent Paul Millett and obtained under freedom of information laws - found 81 firearms “could not be identified,” the report revealed.