People don't think about windage for some reason on these questions. I would first of all want to know if it was hitting left or right of sights. Ok, then check the sights at 20 and 50 yards. If it's within reason...couple of inches or less and if you like that, it's good for elephant. Anything further would be a follow up shot on a wounded ele and for that, any shots you can get into the wounded ele can be helpful. I would not be taking longer shots on unwounded ele, with either scope or irons. 50 is a long shot for unwounded ele and you are actually cheating yourself out of the real experience that is hunting ele. For me, the hunt begins at 50 and anything further just needs more work to cut the distance.