My all-time favorite spear consisted of a large Bushman, old style rolled and not welded, blade on a Maple staff of about 6 feet. It was heavy enough to land with some traumatic blunt force, when thrown from 20 ft, and bury about 1/2 of the blade in a hardwood tree. The spear would stick and the shaft would wobble/swing back and forth but the blade was undamaged.
Never tried to deanimate anything or anyone but it is a gas to throw a big spear just as the frontier hatchets are. But easier to find when you miss your target than the hatchets.
I have extra Bushman blades, one large and one small, on the ready line since they were so cheap at one time. And, the yard is full of small maple trees just waiting to be made into spear shafts. Unfortunately, I hear that the current Bushman blades are brittle.
oregon