There are pistols, shotguns and rifles in use at the same time. It does depend on the target.
Again, why the automatic assumption that our forefathers were so blooming stupid that they could only use one weapon at a time?
I'd think that there is no problem with using a bow/arrow for small, agile targets.... an atlatl for a long range attack on a big animal and a thrusting spear for the coup d'grace.
It wouldn't surprise me to learn that a stone age hunter also kept a big, man-eating club handy to deal with interlopers.
Something is wrong here. War, disease, death, destruction, hunger, filth, poverty, torture, crime, corruption, and the Ice Capades. Something is definitely wrong. This is not good work. If this is the best God can do, I am not impressed.
-- George Carlin