Sort of, but it's not spelled out in the context of the reloading world. I can understand how someone new might not know what we're talking about in reference to a "node". And he even asked that we forgive his ignorance, but someone still had to be a smartass instead of just helping.
Weldit - when we talk about a node in reference to loading for a precision rifle, we're looking at a progression of (usually) powder charges or seating depth, and looking for a cluster of points that all result in very similar point of impact, or velocity, etc.
Although to be fair, in the context of the post you had replied to in your question, the concept of finding a "node" in velocity from a string of a single shot at each charge is highly questionable at best. It's no surprise at all that he saw a different "node" when he repeated it - what he thinks is a "node" is far more likely to be just a random clustering of the data.*
*This is a lot like 3 shot groups - if you look at a group of 10 or more shots, you can almost always pick at least one or two three shot groups within that 10 shots that would measure out as a much smaller group size. Now imagine by random chance you'd fired just those three shots - that's why 3 shot groups are so unreliable as an indicator of performance. But that person's shot string above was essentially using 1 shot "groups" (sample sizes) - far worse than even 3 shot groups.
Hope that helps.
