Mmm hmm, you shot a rifle at -40*.?
I call bullpucky on that one.
Steel don't like mass pressure at -40* there buckwheat.
Wow. Guess all those rifles, pistols, machine guns, mortars, howitzers and tank cannons and whatever else we fired at -40F were just imaginary? Firing a rifle at -40F is not just ok, it's within the REQUIRED operating range for US military weapons. Yes, I did spend some time at the Army Cold Regions Test Center at FT Greely AK. And no, the steel alloys in military rifles ain't that much different that commercial sporting rifles.
Oh year, no issues with plastic stocks either. But some stuff they tried to use LCD displays on were a complete failure well before -40F.
