Like Rod said, Elk are beastly compared to deer. I saw a hot 300 win mag 180 grain partition hand-load hit a bull at 75 yards broadside, miss the ribs going in and not exit. They are tough and require a big ol hunk of lead. From my experience they don't bleed much from entry holes and they can run a ways after a solid hit. So an exit hole will create a much better blood trail. A 41 simply wont cut it. 44 mag is minimum IMO.