We drive AIRSOFT bb's to MACH 4

What is the fastest an airsoft bb has ever been shot? I really don't know so this may be a world record. We used aluminum airsoft bb's, which are a little heavier than plastic ones and are sometimes used for long range sniping. I thought the aluminum bb would be stronger than plastic and have a higher survival-rate, but we DID test a plastic bb with impressive results.

My high speed camera crashed on the last shot but the other shots should give you an idea of the damage these do. The camera is like a little computer and it sometimes misbehaves.