I swing a stick at an incoming projectile, and a lot of the time there would be a double hit. I can tell because I play a sound on the collision. Also, when it happens I can see for a split second the projectile start to go one way, then on the 2nd hit it goes off in a weird direction. Like the stick moves ahead of the projectile after the first, then the back part of the stick 'hit’s the projectile again sending it backwards or sideways.
So my question is, how can I prevent this?