I am leaving for RSA in mid-April for my second ever safari. The first time I went I took my 270 Win and had no problems shooting 150 grain core-lokt bullets. This time I am planning on taking my 300 Win Mag with 180 grain Barnes TSX bullets. But, I am considering also taking a 270 WSM as a "backup" gun just on the off chance that something happens to the first gun. I have only 5 or 6 of the medium sized plains game (waterbuck and nyala) on my list for this trip. I would like to hear from the good folks of this forum - how many of you take a second (or backup) rifle?