This actually happened to me.
A friend and I were plinking away at a large land fill with high banks.
A decent sized bear was foraging on the far side and took offense at the noise we were making.
So, it made a bee line for us, and making snarly faces.
We made our own bee line, straight for the car, got it started and burning rubber outta' there, just in time.
No shots fired.
That bear was a lot bigger, up close.
Fast runner, too.