My brother in law,said that he was shooting his bow the other day and he knocked an arrow and took aim and when he repleased it,he said it sounded like a dry fire! He didn't know what happend.Upon further inspection,he said that the arrow had broken in 2 peice when he released it,he said the front half with the broadhead on it was just a few feet in front of him and the back half,with the fletching went about 15 yds.He showed me the arrow and it did indeer break clean into.It was a carbon arrow..Any thoughts as to why it broke like that?