The question of is lion hunting with a bow a stunt was answered yesterday:
"
How likely is it that an expert archer can kill a lion with a bow using just one arrow?
100%, in seconds."
So you can put that aside for the future.
So will a properly placed 22 or a spear. It doesn't mean it's the best way or even smart...
There are plenty of game animals wounded and lost with "proper rifles"
The only shot that will drop an animal at the shot is to brain it, but most hunters don't take that shot as it's a smaller target then the heart lungs.
With a heart lung shot, a modern compound with a good sharp fixed broadhead will do essentially the same tissue disruption to the hear lungs as a small bore with a "premium" bullet or a big bore with a hard cast. So if you consider a 45-70 with cast sufficient, the same goes for a modern bow and arrow.
Shot placement is the issue, and no sporting weapon will make up for a muffed shot.
