The flip side of the coin is that:
1. Bothyou and he are in a public place and he has the right to be wherever he wants.
2. He might not understand you warnings.
3. He might be mad at you for yelling at him and want to beat the daylights out of you for telling him where not to go.
4.He might not be armed.
5. He might be bumming at match.

All you have is your perception that the guy is a threat and he has no business with you.

The guy who continues walking toward me despite warnings, use of obsticles, retreat, hand on weapon, whatever is available, forcing the situation on you is the guy who REALLY SCARES ME. This situation scares me because if you shoot, you do so with incomplete knowledge; if you dont, you could end up dead like so many who are shot in the head at close range.

That is why Im looking for an advanced CCW course that will resolve questions like this.