Lead weight... wood .. who knows!

[Magnus]

Any reason to believe that the pila needed the extra punch? Anyone done a little chart as to the region and date of known pila with this "lead weight"? The era and region may give us some insight as to who the romans were fighting at the time, so we can see if there is any corelation between the armour worn by the enemy soldiers and the need for more puncture power in the javelins.