That FBI report says

There were a total of 50 active shooter incidents in 2022, resulting in 313 casualties (100 killed and 213 wounded).

The Wikipedia article on mass shootings says:

Total mass shootings: 695, 762 dead, 2902 wounded

So there’s some discrepancy. The opening of the article explains a little:

Gun Violence Archive, a nonprofit research group that tracks shootings and their characteristics in the United States, defines a mass shooting as an incident in which four or more people, excluding the perpetrator(s), are shot in one location at roughly the same time.[4] The Congressional Research Service narrows that definition to four or more killed and excludes the injured who survive.[2][5] The Washington Post and Mother Jones use similar definitions, with the latter acknowledging that their definition “is a conservative measure of the problem”, as many shootings with fewer fatalities occur.[6][7] The crowdsourced Mass Shooting Tracker project applies the most expansive definition: four or more shot in any incident, including the perpetrator.[8][9]