Was out to the range the other day mind you it was exactly 30 degrees above zero. First time using this chrony. Question i have is the manual said it needs to be 32 above for functioning temp. Could this have given me a velocity spread out of the norm? Reason i ask is i had like 100 - 125 fps spread in a 5 shot group. These are handloads same brass lot same powder lot same charge same bullet lot same seating depth same wait time between fired shots. The first shot in the 5 shot groups was always the fastest then losing velocity to 4th shot then slowly coming back up. Just thought it was weird. My lack of experience with the chrony is probably my problem but thought i would ask