I was playing around with some of my more accurate handloads, as well as some factory loads, in some of my rifles & pistols (and a few slug rounds) last weekend, and I was just crunching the numbers. What do you consider an 'average' velocity spread, for standard hunting ammo?
BTW, and FWIW, I got everywhere from 10 fps to 127 fps (the first was a handload, the second was a factory load
....think there may have been a problem with the chrony on the last one!).