Then you're going to have all kinds of computer geeks tell you they are too stiff ( 300 spine) for your setup. Me? I use my brain and tried some. I get themto fly well even down to 53# at 27" long--27" draw, too. They're not perfect, but then neither am I. I get them to fly real nice with BH's at 60#.

Don't forget to cut some from the nock end before the final cut-to-length. Do this and you can take a .006" shaft down to .003" most of the time.