On 2 Jun 2005 07:53:31 -0700, Gary wrote:
You know, making silencers can get you in big trouble. The two liter
bottle works quite well for handguns up to .38 cal. but tends to blow
off of high power rifles. Good luck.

He's talking about a glass bottle, so while your guess wasn't a bad one
with the information you had, it's probably no the case here, given the
new details.