I wouldn't worry too much about the noise. As you won't be able to feel your face after the first round, much less have any hearing left thereafter.
The second round will produce a small trickle of blood from your right eye (if you're right handed). This is from the concussion. But not to worry, you won't have any short term memory left, so you'll never know what caused it.
The third round will cause anal seepage. Much like many prescriptions, sometimes the cure is worse than the sickness itself.
The fourth and final round will cause what's known as a basilar skull fracture. This can be very painful and will blacken both eyes, but until you step up to a 500 Jeffery or larger, it's usually not fatal.
If you dare shoot four more rounds after the initial outing, give us a shout back, and I'll let you know what to expect after you come home from rehab.
Good luck!