Thread: V0 for cold and warm ammuntion

I've stressed that one needs to chronograph the loads all through the year and different temperatures if one wants to shoot properly longrange at unknown distances. THAT IS MORE OR LESS A CRITICAL ENABLER.

This data gathering takes some time. In this film I tried a little experiment too see if I could manipulate the ammunition temperature and match my already logged velocities.

I consider this a failed experiment as there was too much delay in the cartridge mass for me to say anything useful about the ammuninition temperature. I got ok velocities for the cold ammunition, the warm ammunition was a little harder to determine. It gave a maximum velocity indication but I could link it with sufficient accuracy to a temperature so this data could be of actual use.

The velocity variation between cold/ warm temperature is unavoidable, just make sure you don't get irregular performance at the higher and lower temperatures - accuracy must be the same through the temperature zone you shoot. The V0 change will be from 0,5 msec to 1,3 msec pr 1 Celsius, the most commong seems to be right around 0,7-0,9 msek per 1 Celsius

Here's the experiment Chronographing cold and warm ammunition