I tried a pack, and I couldn't get them to fly very consistently at more than 20 yards. My slick tricks grouped much better. I haven't shot them at game for that reason. I'd stick with slick tricks, montecs, or snypers.
They are a great broadhead and they usually fly great. Friend of mine was having accuracy issues and was frustrated. So we fletched him up some arrows with blazers and tuned his bow & had him shoot and then put on the Shuttle-T's and they grouped in the same place. He was one happy Dude!
after bad luck with Wac-em's we switched to Shuttle T's and they flew great just like field tips and my buddys elk had the nastiest hole I've ever seen a broadhead make, Ray Charles could have followed that blood trail.