What is the lowest outdoor temps you shoot your 850 @ on CO2?

It has been too long since I have had the time to shoot and cool weather is upon us here in AL. I was trying to remember what the coldest temps we used to shoot our 850's @ without a major decrease in accuracy. If I recall correctly it was around 45 degrees or so....

I just found out there will be a state championship FT match again in our state on December 5th. I would like to take the 850 depending on weather.

I have bone stock 177 & 22 cal 850s. I have spring kist from Roland that I could install if that would help with the cooler temps.

Thanks

~GOD BLESS~

john