Yes, I can understand the percussion concept......good point.

Actually spray is quite effective against grizzlies as well. Effective over 90% of the time. The trick, however, is being able to pull it out and fire effectively in a mere matter of seconds. With Grizzlies it is common to find yourself in close proximity suddenly and unexpectedly which can initiate a charge. Very fast critters when they want to be. Another reason that spray might be a better option than a firearm except if the person is an expert marksman. There is just a small box to aim for if you want to put one down with a handgun.