I just did this yesterday with my new Black Gold sight. I put the one that corresponded to the chrono speed on and it was nowhere close. I think you could use just about any tape to start with and then do the following. I shot several arrows at 80 yards and adjusted the sight until I was on. It ended up being 76 yards on my tape. I then put the sight back to 60 where it starts and removed the tape. I lined up the 60 yard mark against 60 on the other tapes until I found one where the 80 yard marker was at the 76 yard mark on my original tape. Ended up being 20 fps over what my arrows chrono at, but when I put it on, it was dead on.