Good, But a Bit Disappointing
Pretty nice graphics. It's a pretty overused concept for a Flash game, but it doesn't really get old too fast. Anyway, here's my review breakdown:
+Feels good and satisfying to shoot and hit a target
-Not enough targets, usually too easy
-Lacks a real rewarding feeling
Overall, when you're shooting targets, it's very fun to play, but a lot of the time there is not enough going on, and it lacks that feeling of really being rewarded.
Also, though I love the feeling you get when you fire (how the screen slightly shakes, making it feel "powerful"), sometimes it is unresponsive.
Overall, you obviously know what you're doing with making games... but next time, just add more to it.