A coroner has found the Brisbane Broncos should have done more to teach Francis Molo how to avoid shoulder charging opponents after causing the death of James Ackerman in a 2015 Queensland Cup match.

Ackerman was shoulder charged in the opening four minutes by Molo at Bishop Park, and died two days later in hospital, but the Broncos contracted player went on to twice repeat the illegal tackle on his return from suspension.

Rugby league player James Ackerman.

Coroner John Lock said Molo made no attempt to apply a "legitimate" tackle on the 25-year-old prop, and the force of the shoulder charge, which did not hit the head or neck, was such that it caused death.

He found the contact was to the chest and upper body of Ackerman but the impact caused forceful movement to the head of the Sunshine Coast prop and ruptured an artery in his neck.