This Saturday I am going hunting for the first time ever! I am going with a couple of friends. We will be going after dove and squirrels. I am brining my 20 gauge pump with me. I currently have 7 1/2 shot and 5 shot. can I just bring the 7 1/2 shot for both or no? Also I understand that Black Bear may be in the area. What do you recommend if I should encounter one with my friends? Slugs? Thanks for the help!