Just thought I'd share my initial impressions. I bought a 3 pack of the new NAP Spitfire double cross a month or so ago, and just today finally got the chance to shoot one. I have my bow tuned very well with bareshafts, but was still impressed with the accuracy of these broadheads. I literally took two shots and said that'll do. At 20 and 40 yards the broad head hit exactly where I was aiming. The blades appeared to open well, and there was complete penetration through my Rhinehart Woodland buck 3D target. The entry cut was large, I didn't measure but appeared to be full blade, and all 4 blades were open on the back side of the target. I would say after two shots they are still razor sharp and I could probably put that one through an animal. These will be in my quiver this season and I'm pumped to try them on a whitetail soon.