Re: The first sign of excessive pressure is...
Field data is this most important and velocity is a feel good thing because drop data is the most important. However, I routinely use the ES and SD as validation of my methodology for reloading. But if you assume even a 2% error at 2800 fps then that is a 56 fps error rate. If your chrony is consistently high or consistently low, then your ES and SD are just an indirect measure of actual ES and SD. That is why it would be nice to have a set of known velocities (i.e. 2500, 2600, 2700, 2800 fps) to fire over the chrony and estimate actual accuracy and repeatability over a range of velocities. Would be nice if there was a service that you could send in your chrony to for this validation process!