Could you elaborate a bit? What kind of edge does your NMFBM have?
To me, there are lots of factors to consider to chop effectively. Edge geometry is pretty straightforward: as Garth told me, sharper for clearing brush and free-standing stuff, more obtuse for stationary wood, while the different grinds in my experience are more for edge durability than chopping effectiveness (in general). That said, you also have to consider the material you're cutting into as well as how far you expect the blade to go in, because once the material goes behind the edge, you have to worry about the material's rigidity and the blade thickness. Then again, that can be avoided altogether by chopping technique, i.e., taking lots of small, tangential bites out of the wood instead of trying to cleave right through it perpendicularly in one stroke. Which even further depends on how thick the wood is.
I imagine it goes on for a bit more

however, longer never hurts for more momentum.