Didn't we just finish hashing this over recently? YESS!! IT"S TRUE!! Air pressure building up ahead of the bullet when you fire will pop the tape off, but it has to be OVER the muzzle, NONE IN it!

A wrapping of Saran wrap or a condom is actually more waterproof, and you can wrap the plastic stuff around the lock/nipple or lock/frizzen/cock/pan area too, and your rifle will fire after a week in the rain!!

Kaboom!!