This Winter I have not been out to shoot outside since around muzzle load hunting right before Christmas & it was still relatively warm.
I decided not to go shooting much when it gets too cold, since over the years I have found that even the tools I used in outdoor construction had a tendency to break down more often with cold snaps & it just caused more grief than it was worth on some days.
I felt the same about "some" of the firearms I have...
The all steel ( with wood/no plastics) firearms would be fine, IMO, but anything plastic or lighter built metals may not stand the cold well enough.
The missus .357 LCR for example. It has mostly steel & shoots great, but it has a bit of what I call, "plastic", although I think they call it "polymer", that would concern me when the temps get lower than -0- F.. Another would be the inexpensive Highpoint .380 I have for plinking. I don't know exactly what metal they are made of, but I am not sure I want the possibility of a sort of hand grenade going off in my hand, if it is not up to the cold.
I even change to all steel 45ACP, or snubbie 38 for CCW for the Cold months & likely won't change up to the 9mm too often until things warm up a bit, since it has some "plastic/polymer" too.. ALthough on the warmer days I have carried it some...
So, I don't have much to offer for accuracy & performance differences as far as components & firearms go this year due to the cold.
I do know that I asked about some cold weather info from the forum in topics in the last couple years & got little to no response. What folks do , like for gloves & such. What performance changes they saw in "Temp. Sensitive" powders, etc...
Seemed like no one was much interested... So, I just quit asking about such things.
Looks like you are doing a bit better in that.
Hope to see more responses anyway!