IMO .30-06 can be adequate for eland. But you need to make sure it's a VERY good bullet and a well placed shot. The first eland I took was with my Model 95 (before adding a swappable 375 H/S barrel to it). Thought I had it all figured out with 220 grain Core-Lokt bullets. I had used 220s successfully on some pretty heavy beasties including waterbuck. On that eland, I was about 3 inches forward of the boiler room. The bullet smashed his massive shoulder bone into about 8 pieces and came to rest looking like a Rodin sculpture in the muscle just behind the joint. Had to follow that guy for almost 10 hours, all the while kicking myself for making him suffer so badly. This amazing madullah tracker eventually found him lying exhausted under a tree. He could go no further. He did not move a muscle when I walked right up to him (and yes, I apologized). When we got him back to camp, I dug out the bullet and the broken pieces of shoulder bone. I've kept them all for the past 27 years to remind me never to do something so stupid again. P.S. I switched to 180 grain Winchester Fail Safes after that (with excellent results), and eventually 270 grain North Forks in the 375 barrel.