a couple things here ..... with practice you can be loading the rifle and yelling at the bear . so when you finally are ready , you have a full magazine . if you are unable to do this the loading gate spring may be too stiff .
bears just don't jump out of thin air on people . they are big and noisy and announce their presence .
the second thing here is this , if your going to pick up a rifle for self defense us ...... USE IT ...... don't wave it around saying " looky here mr bear , I gots me a gun ..... see " " bang ....bang .... bang .... " .
if things have gotten so bad that you feel you need to involve a firearm , pick it up and use it and make the first shot count with the intent of not needing the rest of them .
the bad thing about warning shots is this .....bears in many areas are starting to associate gun fire with food , warning shots will do nothing more than to reinforce this , and possibly attract more bears .