mike, I hunt a lot of ground hogs with my bows, and ground hogs are probably the toughest game I have hunted with a bow as far as arrow damage, and I have never bent a FMJ, I even had a ground hog try to go down a hole with the arrow sticking way out on both sides...and he was really flexing that arrow....and it was still strait..."as an arrow". obviously as Zmonster said, they CAN be bent...but it is very difficult. they are very tough arrows. my buddy bounced one off of an iron buck, and that bent the very tip of the arrow. so yes, they will bend if you get the right hit on them...but not nearly as easy as I thought you would be able to bend em.