Here you see Peter Thain with the pendulum technique. On several photograph which has been taken of a film to see you how Peter is best does on the correct timing the rod tried tender. By raising the lead quietly forward and then to the back you can bring the lead in the correct position by a slowly building speed. By now on the correct timing the rod at the last moment an acceleration is put aside give the lead with maximum speed.

.On the photograph is well see that the pendulum are not simple. There some time training to in advance must will the pendulum technique safe be able conduct

You care should practise will that there are no people in your immediacy. The casting lead can off  300 meters fly at a crack far. Thus missing a suitable location for practice.