Thats B.S.

Thats like saying there is no excuse to strike out in the world series!!!

Its not intentinal, any number of things can go wrong out there.
If you are taking a shot that you practice often at targets andmake a bad shotits nothing to be ashamed of just get out there, do you best to find that deer, and learn from your mistake.
However if you are presented with a shot that you are not comfortable with or have not practiced for and you take the shot and make a bad noethen you are right, there is no excuse for that.

Oh and Moebedda: as for your question. Alot of people don't like the penetration of mechanicals however I have had a pass throught on 100% of the deer I have shot with the NAP spitfires. and they make one hell of a hole.