The weapon required is the .308 "Rival" Handgun, but if you use any other ethical weapon you will not complete the mission... but you will make a quick harvest. In addition, if you place a tent right there at the graveyard where she spawns, you can start your expedition there and can kill her over and over again as long as you don't use the "Rival." Use a different weapon, collect the harvest, and start a new expedition, over... and over... and over... and over... etc... you get the point.
I believe that starting at a tent (or arriving via FT) should be like starting at a lodge: there should be no animals allowed to spawn within 150 or 200 meters; or it should be like firing a shot and nearby animals should scatter. This particular loophole, which allows a huge number of brown bear kills per hour (far better than baiting could ever do) only illustrates my point, but it shouldn't even exist, and it needs to be closed.
PLEASE EW, this needs to be fixed already. Tents should be like lodges, that's all that needs to change. FYI, this is not the only mission where the final Single Player mission can be used to harvest animals repeatedly. i.e. Coyote Mission 10 - Take Down (just kill a female first.) It's way overdue that something was done about the tent/spawn/instakill problem. It's time to stop ignoring it.
In the spoilers below are two snips from one player's profile (a month apart) illustrating it is possible to kill "Mama" endlessly at 20 to 30 kills per hour. (The third spoiler is the map of one kill, but they are all the same.) Kudos to the player for gaming the game, because obviously it's not his responsibility to protect the game from manipulation, it's EW's.
(Merry Christmas folks. Tomorrow I have been on the forum for 10 years. )
Nov 24