Yep, any decently powered handgun is TOO LOUD indoors. But that doesn't mean they are all the same. A .357 is among the loudest handguns. And will either cause more hearing damage or be more likley to cause hearing damage. And yes, even if your mental focus lets you not notice the noise at the time, the physical damage to your hearing occurs anyway. And please don't get one with a muzzle brake.
Now getting a longer barrel helps a lot on the noise. A 9 3/4 inch .357 is much less loud. Also will have lots more velocity. I don't know that a 9 3/4 inch .357 will be as quiet as a 9mm though. Just that it is much quieter than a short barrel. It will also have much less muzzle flash. One other comment, quality ammo is blended to have reduced flash versus cheaper ammo in handguns.
If you want to use a .357 indoors, get a Marlin lever action rifle.
Now getting a longer barrel helps a lot on the noise. A 9 3/4 inch .357 is much less loud. Also will have lots more velocity. I don't know that a 9 3/4 inch .357 will be as quiet as a 9mm though. Just that it is much quieter than a short barrel. It will also have much less muzzle flash. One other comment, quality ammo is blended to have reduced flash versus cheaper ammo in handguns.
If you want to use a .357 indoors, get a Marlin lever action rifle.