Snow Bandits will always aim after shooting, resulting in what appears to be them firing in completely random directions.
They don't do any damage when touching the player; plus staying close seems to prevent them from shooting as they try to run away and keep distance.
They like to hide inside a Snowman prop, in families of 3. They will make no attempt to attack the player while safe inside this cozy little home, and are thus non-essential kills when undisturbed.
Please be considerate of your Bandit neighbors and their homes!