My question is why not just make all programs for boat tail bullets use the g7 math to calculate trajectory its all smoke and mirrors
The answer is because its not smoke and mirrors. Trajectory prediction programs reference models, and bc’s are a factor of your chosen bullet to that model. If you were right about what bc’s actually are, it would be as simple as to “make all programs us the g7 math.” Unfortunately you are wrong.
If anyone is still paying attention,
the G7 BC of the Sierra 230 pointed is .401
The berger 245 is .413