Unfortunately I have and I agree with you. Even a .22 in a confined space is loud and 9mm is just deafening. Besides, I'm not so sure I would want to light off a round inside an overturned aircraft due to the possibility of a fuel leak.Bill:
Obviously, you've never fired a firearm in an enclosed space. Granted, total hearing loss could be a minor problem compared to some scenarios while upside down in an RV!
Bill: You're right. Upside down, it's probably cracked anyway. I'm thinking that it might come in handy after a forced off field landing while upright with a bent fuselage and a jammed canopy. I have an RV-8.