not sure about the tillering,,, not that it matters though. i have a metal risered 62"er. very dead in hand,,, quieted to a VERY faint whisper after a hush puppy split in two and placed at the 1/3 and 1/4 marks,,,, the higher pitch of carbon and metal is gone. brace is at
7 1/2" and nock ht is at 5/8",,,, arrow flight is good to my eyes,,, have not bareshafted yet though. BUT,,, all my arrows hit far right of my mark,,,, those arrows fly dead on out of my 50# Brack,,, the ACS CX claim holds true.