First question--What ammunition did the maker regulate your .470 with? That would be a good place to start.
I have also used Safari Arms ammunition loaded with Woodleighs in my .470. Excellent stuff. He will send you a sample pack with several loads so you can see what shoots to the point of aim. Ditto for Superior Ammunition. Also great stuff.
The Norma PH line is loaded with Woodleigh softs and solids. Superb QC, but @ $200 for a package of 10, quite pricey.
The Hornady solid is steel over a lead core with a thin copper jacket. It is not bonded, nor is their DGX soft. It is half the price of everything else. I practice with it, but haven't hunted with it.
Federal loads a Barnes monolithic solid and a Swift A-Frame in .470. It regulates well in my rifle and has performed well in the field. However, Barnes will no longer sell bullets to Federal, so stock up if your rifle likes it.
I took Federal Trophy Bonded Sledge Hammers on an elephant/buffalo hunt in 2010. There is no steel between the bonded core and the jacket. The bullets riveted, bent and fishtailed with monotonous regularity. Will never use them again. Personally brought it to the attention of a Federal rep at SCI a year ago who said "they would open a file on it", and never heard from them again.
Hope this helps.