Well I have found that a 5.56 loaded with 45 or 55 grain blitz bullets works wonders on armor plated Crows that destroy our farm food. And with an accurate rifle can be quite effective on these critters a long ways away. But that's totally off the subject of the Government spending our money for a toy that may not last. Easy to spend other people's money when it seems an unending supply. Congress figured that out a looooong time ago.