IRONORE/MET/L Sector leaders BHP Group BHP.AX, Rio Tinto RIO.AX and Fortescue FMG.AX added between 1% and 3.5%. June 27 (Reuters) - Australian shares jumped on Monday, with heavyweight financials leading the gains as investors shrugged off recession fears amid looming rate hikes, while strong iron ore prices boosted miners. Investors also took cues from Friday's strong gains in global stocks, as a recent slide in commodity prices eased worries about soaring inflation and the rate hike outlook.