Dear Brent:
Here is how you calculate standard deviation.
1) Calculate the mean (average the velocity of the shots...add up all the velocity scores and divide by the number of shots).
2) Determine the amount that each shot deviates from the average. (ex. average velocity 3000, shot #1 is...
Dear Warren:
In truth, I probably don't need the extra velocity. I was actually more interested in any gains in case life or loading ease. I have a friend with a 250 AI that he really likes for the lack of case stretch.
Any other reason to go with the Ackley other than velocity? What would...
I have a Nesika action at a gunsmith's being built into a 6.5-06. The stock is the MacMillan McClassic and the barrel is a Krieger #4 in 8 twist (I think that is what we decided on). I was going to have him build it in 6.5-06 and 25". Now after having read around here for a while I am having...
Dear Penn:
The standard deviation is a calculation of the distance each data point (velocity of each round) falls from the central tendency (mean, median or mode). The standard deviation is one of the ways of measuring variance. It is a MUCH more meaningful indication of variability than...