Not directly related to your question Centaurus but of historical note, the CSIRO owned and used a 310 (VH-REK) back in the late 1950s for cloud seeding.
Later spent nearly seven years in New Guinea being flown by a Catholic Priest, the late Father JGA Flynn, before being finally relocated at Bankstown.
Was extensively rebuilt in 1994 and acquired by HARS in late 1996. Believe it was the first GA aircraft, as opposed to airline and military, to have approval for IMC operations in Oz.