Lynn used the 300 grain Hornady factory loads in .44 Mag in Australia. Keep in mind these are really mild loads that only clock around 1,100 fps. They have a tendency not to open and act more like a solid (and not a very good solid at that). I talked to Lynn's outfitter after this hunt and he was uncomfortable with Lynn's choice, but told me they worked because they so often don't open. Combine that with Lynn's impeccable shot placement and you have a recipe for success. It is important to note that Lynn used CorBon Penetrators and FA 300 grain bullets in .454 in Africa.