Once again I generalized and find myself in trouble.
Casting any bullets with hollow points or bases requires pins to create the empty spots, more complex and more expensive equipment, as is readily seen in post 4. Although you can actually find cast hollow points or hollow based bullets, they aren't generally available at mass market dealers nor will you find the mass production companies like missouri bullet investing in the time and equipment to make them. Who needs the trouble when millions of bullets can be cast and sold without complications? Most lead or plated hollow point bullets sold are swaged, not cast. Swaging easily creates hollow areas, it's no more difficult than any other shape.
The cast button point is in fact as he said, a classic from decades back. Although they are still made and sold, they are in fact uncommon, it seems, and probably hold a very small share of the wadcutter market. You will find lots of people who hold by the old classics, lead hollow base and button point, but in general, the bulk of them will be the double ended wad cutter in either cast, swaged, or plated swaged. As said, there is no need to turn the stupid things right side up as you load them.
You are still left with the one answer. They are different, they may give varying performance in any gun that you own, and if you want to load and shoot wadcutter you can try a few products and see if any one of them gives you noticeably better performance. Unless you are truly meticulous with your research you may not find any one to be superior to the others.
I believe that your best results may come from using the standard, unplated swaged lead HBWC as produced by speer or other brands used at 700 fps or so. That seemed to be best for me, but feel free to dig into every source or method available.
