Terms for subject Cliche / convention containing shooting

English	Russian
Like shooting ducks on a pond	просто (Interex)
Like shooting ducks on a pond	легко (Interex)
Like shooting ducks on a pond	без затруднения (Interex)
like shooting fish in a barrel	без затруднений (Liv Bliss)
like shooting fish in a barrel	легко (Liv Bliss)
like shooting fish in a barrel	просто (Liv Bliss)
Shooting for the moon	устанавливатьдля себя, кого-л высокие цели (Interex)
Shooting for the moon	метить высоко (Interex)