If you've ever thought of using a gun to defend yourself (and we all have on this forum), you need to think how you are going to handle it afterward. For me, I'm going to tell the officer responding to the scene the basics of what happened. I will tell an investigating detective one time what happened. I will then assert my Fifth Amendment right to remain silent. By this point, I figure they are looking for inconsistencies and it's quite possible for a truthful person to relate inconsistent details under stress. Everybody has to decide for themselves the course to take.
Jim's Rules of Carry: 1. Any gun is better than no gun. 2. A gun that is reliable is better than a gun that is not. 3. A hole in the right place is better than a hole in the wrong place. 4. A bigger hole is a better hole.