hi AH, I'd like your input on the right caliber for a springbok grand slam, I'd like to take the trip to sa just for that. I used a 7mm when in Namibia and harvested a kudu, gemsbok, blue wildebeest, zebra and red hartebeest. I'm thinking a 7 mm might be too big for springbok? Any input would be greatly appreciated. And I do have a 280 rem and a 243. Would either of them be adequate?