Do you know who Patrick Hale is? If you don’t like the math I use, look him up and tell him how wrong he is. It’s math he uses in his computer software.
You can think anything you want. But I have used this math enough times to know it is correct.
Stroke length, compression ratio and rpm at peak torque is what Patrick Hale says is how you determine you’re at .050 timing. I’ve tested it. He is correct.
Or, you can see if you can find a copy of the Don Terrell book where he published enough math to choke a nerd.