rmtaylor, that is the same Chrony I have, the same one I had back in the late eighties and I bet the same one that most folks have. If your computer system is a Microsoft version, I bet that you have the math for doing averages and standard deviations already. That is what I use, no use spending money on a small computer do do this when you big one will. that Chrony will change your reloading life, I guarantee. Please let me know what you thik of the Lee software. Thanks, JP