I doubt if you are hunted by a mountain lion that you will ever have a chance to shoot it. all of the mountain lion attacks that I have read about, the victim never saw it coming.
so, have a buddy.....one that looks tastier than you... or is competent enough to beat the crap out of it.
mountain lion sightings are pretty rare, even in areas that they are known to reside....I have seen two in my whole life and both were exiting, stage right.
Navin R. Johnson: "He hates these cans!!!! Stay away from the cans!!!!"