bull's eye

nouns

in target shooting: a score made by hitting the center of the target
"in repeated sets of five shots his numbers of bull's-eyes varied"
is a type of (narrower)
the act of scoring in a game or sport
"the winning score came with less than a minute left to play"
the center of a target
something that exactly succeeds in achieving its goal
"the new advertising campaign was a bell ringer"; "scored a bull's eye"; "hit the mark"; "the president's speech was a home run"