I think there are a couple of different ladder and OCW methods that sound similar but are based on different logic and look for different things. The two biggest differences is harmonics and muzzle exit timing, and the other is velocity nodes. They are related and similar, but different. And I see people chiming in here coming from these two different logic chains assuming the guy they are responding to is looking for the same thing.
The OP might be better served if he clarified for the audience which of the two he's looking for.
The OP might be better served if he clarified for the audience which of the two he's looking for.