Shooting in cold weather?

[daBear]

case in point- we were out at the black diamond range one day and it must have been at least -40- we were shooting an 8mm mauser and a lee enfield no5- the mauser fired, but the lee didn't or couldn't - the cold had slowed the firing pin to the point where the pin didn't have enough strength to fire the primer- the mauser uses a different system

The real reason for the LE not firing was not a result of anything mechanical. Indeed it was a lube issue. Wrong 'oil' and too much of it, but being a kid didnt think it would pose a problem. Lesson learned. I know, cuz I was there
dB

 

[YouAreInOilCountry]

In extreme cold here, myself and friends simply use 5W30 synthetic motor oil on both rifles and handguns.

There would be a lot more deer if guys didn't shoot in cold weather.

 

[6MT]

Shooting rimfire, or centerfire for that matter, sucks in cold weather. Propellants burn differently, humidity acts differently, and it's just plain cold. Sh1tty all round.