For the past few months I had been using 4.0 gr of VV N320 behind a 124gr FMJ Zero bullet as my USPSA Production load. I decided to give this load a try 'cause a lot of people told me that VV was the cat's meow and that if I was using it, I was not one of the cool kids. What I have found out is that, when I have chrono'd N320, it has a very small Extreme Spread and Standard Deviation but today I compared my results against Titegroup and I was surprised by what I discovered. It turns out that, even though the ES & SD of Titegroup is not as tight as that of N320, the accuracy of TG was better. I was under the impression that a tight ES/SD was a good indicator of the accuracy of that load but it seems that this is not always the case. Is this a common issue or am I interpreting my results all wrong?