"dueling tree" and "reactive target".
If you take a friend, a dueling tree is a hoot. Set one with say, 4 or 6 plates on it at a distance at which hitting it is anything but easy with the chosen guns from the chosen stance (unsupported, bench, whatever). Put two plates on the left side and two on the right, say go and start blasting. The first one to get all 4 or 6 plates onto his opponent's side wins the game. If people with unequal skills, you can use pistol vs. rifle as a 'handicapper' to the pistol-user.
(wait, that's not right....
The threads on reactive targets will give you all the ideas you need for that.