RE: .300 wsm...what bullets to use?
According to "Ammo & Ballistics II 2nd Edition" there are only two factory loads avaliable to you. Win. 150 gr. Ballistic Silver Tip, and Win. 180 gr. Fail Safe. The 150 gr. will work well for medium sized game, and the 180 gr. will work well for large sized game. The 180 gr. will work well on medium and large game.
Good luck.