just had a local bow shop put new 60x "premade factory direct" strings/cables on my barnett whitetail hunter 2. i shoot a 470 gr arrow/broadhead combination and use a speed sensitive scope. i know before with the factory string/cable combination i chron'd at 315-ish fps and thats where my scope was set for. after the change i chrono'd again just to make sure for the scope settings and dialed in 301 at the bow shop. pretty disappointing considering i was hoping the new 60x strings/cables would at minimum give me the same outcome as the originals. the bow shop had no interest in advancing my cams what-so-ever when i asked him about it the day i dropped it off. hes a very reputable archery shop in my area so i went with his discretion. seems as though im going backwards with this crossbow. im not too worried about the 300fps for my hunting needs but it is a let down.