09-16-2013, 05:36 PM
It's a good time to bring that point up as well. Ammunition should not be left in direct sunlight, especially in a car on the dashboard. When I shoot in extreme hot temps, I keep my boxes or mags in my range bag, or in the shade. But even then, my chrono will register higher velocities with most ball powders, as in the case of my 16" Grendel pushing the 123gr Scenar at 2583fps from a factory load.