![](https://media.kbin.social/media/cd/fa/cdfafb443c743bfeeabc159965e27a29a189004bbe8fd8b1a2027f9283dc4c6d.jpg)
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Regular bullets fired out of regular firearms basically disintegrate in water. Counter-intuitively, putting more energy into a bullet only worsens the results, making it stop even faster.
Underwater firearms do exist, but they are not common, and even they have incredibly limited range. As far as I know, none have effective range greatly exceeding 50 meters, let alone 100.
Every source I can find mentions maximum effective range at 15ft to be ~98 feet, not 909. So that zero in the middle is probably a typo, if I had to guess.