There is always that type out there in every hobby or sport....he apparently made a bad shot..
Elephant have been headshot with the 700NE and ran off..others been dropped with a 7x57 (Bell)
You can shoot a Buffalo with a 20mm rifle (They are for sale) and if he isn't hit right he can ruin your world...
Shot placement is #1..but we all know that..
As many a PH told me...a good shot with a 375HH is preferred then a bad shot with some cannon...Me..I prefer a good shot with My Cannon's....