Velocity standard deviation to confirm accuracy node?

[VKC]

Does anyone use velocity standard deviation to confirm your accuracy node? If so, what would you consider a good standard deviation range for a precision rifle? What is your process? I will leave it a little vague for now, so as to not to bias anyone's response.

 

[Kirkd]

Tag,
I have no idea. I was wondering what SD would be cosidered good? Bad?
I was working up a a load for m 243 and I noticed that the SD tightened up ewith more volume. Maybe due to case being filled more??? Causing better consistent powder burn??? Just a theory. What do those who know say?