I've never had good luck with GT shafts. Like Brent said, they occasionally split and do have consistency issues. I've shot CX shafts for along time. The only time I've ever broken them (and just the inserted end) is by shooting rocks and jamming the insert back up inside them. They never have cracked no matter how hard I've smacked or glanced off something. For your set up I would shoot a CX 250 with 50 or 100 brass inserts with a 150 grain point. Most on here will advise a CX 150 which will work also. dino