So, i was out shooting today and it was pretty bitterly cold. (-20 or -25 Celsius ) Shooting over a chrony, my first shot in each string was quite a but faster than successive shots getting slower each firing. Results are (in order): Group 1: 2831 2789 2777 Group 2: 2829 2802 2744 2729 As you can see in group 2 the difference is 100 FPS!!!!! I am in need of some guidance once more! What is the cause? Is it shooting cold bore in extreme cold yields higher velocities? i need some help cause im stumped!