Maybe you’ve got the insight & data I’ve tried putting together: seems there’s a need for a graph laying out velocity vs. barrel length vs. twist vs. weight vs. whatever and indicating a happy zone of “if your implementation of these factors don’t end up in the happy zone it won’t work”. The AR platform is great when everything comes together, but is very finicky about what “comes together” entails.
I have that laying around here somewhere... Maybe not exactly what you are looking for, but a close deal. I’m not sure exactly what all is on the graphic, but I’ll try to dig it up and will let you know by FReepmail. I’ll send it to you by regular e-mail as an attachment if I can find it.