what do you guys think of these?
I think he might have been referring to them not opening on contact. There were quite a few reports I read where guys said they had a tiny entrance hole. I think the owners stated that these heads always open within 1-2 inches, but not always on contact.In regards to blade deployment there is a surefire way to tell if the blades have deployed. There is a small washer that is supplied with the heads that goes between the head and your insert. When the blades deploy they leave a tell tale nick on this washer. Due to the design of the head the blades sometimes retract when the arrow comes to rest making it appear that they never deployed. Looking at that washer will give you the answer.