Bottom line up front this is the best splitting axe that ever was, is and maybe ever will be.
I've tried around 50 different axe patterns, and the Wood Bullet beats them all. You can find vintage axes with good profiles for splitting, but finding one with the right profile, a clean eye, an undamaged toe, a big heavy (and undamaged) poll and a long, full bit will not be easy or cheap. Add to that the work you'll have to do fixing it up and hanging it and the price of the Wood Bullet isn't so daunting anymore.
The secret to the Wood Bullet's performance isn't just the edge geometry, it's also the big, heavy poll. It flicks better and swings truer than anything else I've tried. The balance that poll provides also seems to make it less jarring on your elbows when you flick it if you don't let go fast enough. The shape is perfect, with a nice flat top that won't catch rocks while you split on the ground and a wide bit that makes it easy to hit what you're aiming for, and the handle shape has quickly become my favorite as well.
All in all it's my new go-to splitting axe. I might bring other tools to play around with, but when the wood is gnarly or time is of the essence the Wood Bullet is the tool I reach for.