I learned long ago, a big log of anything wasn't worth my time or the wear and the tear on my old beat up body to split, I get my chainsaw out.
I had a brother-in-law with MS that burned wood for heat, people would drop off firewood lengths of trunks for him to burn, I ended up splitting all of it.
One day someone dropped of a load of sweet gum. I spent half a day trying to split this stuff and only got through a few pieces. I abandoned that project, that wood was probably still there when he died.
I watched the fire hardened bow video as well, I have a nice sweet gum picked out near my house to cut. A wedge will never touch the trunk, only my chainsaw and later my bandsaw.
I always halve a log with my chainsaw now, you will lose a little wood occasionally by not following the grain on osage, not so on hickory most of the time. I have so much wood at my disposal a little loss is a good trade off for the economy of effort. I have beat on dozens of large osage logs in my younger days but have no interest in doing the same now. The halves are relatively easy to split the conventional way.
Here is how I split hickory staves.