Old thread but a good yarn...
The 75g Hornady BTHP Match has worked well for me on feral goats. I've also tested it in wet newspaper alongside the 65g SGK, 55g SGK and a small handful of others.
The 75 BTHP penetrates about 4 inches into the newspaper like a knitting needle, then it expands very rapidly and leaves a huge wound channel. It's done the same thing on goats for me.
In the wet newspaper test it out penetrated the 65g SGK by a very large margin, and caused similar - if deeper - "wounding". Not sure if newspaper can be wounded though...
For bulk buying and bulk general purpose shooting I quite like the 55g SGK which are available here in bulk Super Roo packs of 1000. But the 75g Hdys can be bought fairly cheaply too.