flintlocke
Chronograph numbers and accuracy don't always go hand in hand. I have witnessed several loads with 60 fps swings that grouped really well. And some like the loads shown here that didn't group well.
Put no faith that a low SD means absolute accuracy, and put no faith that it wont.
Charlie
I appreciate your verification of what I've recorded. I began chronographing in 1981 with an O 33 and I still use it. Somewhere about 2013 or 2014 I updated the skyscreens with the III s.
I have at least 5 (five) notebooks of graphing & groups of a large number of rifles - in many cartridges & calibers.
I DO like a low SD but it is NOT a reliable indicator of accuracy.
Thank You
Jerry
