Not this year, but have had misfires with a pistol and a rifle in the last few years. Years ago I had and a couple other rifles in really cold weather fail to fire, Remington and Ruger. The most recent were firing pin protrusion issues on a Kimber and S&W. The others were too much lube and sub zero conditions the viscosity of the oil will slow down the firing pin.
The Kimber miss fired 3x on a caribou hunt, and did it once 4-5 years before (my first in a really long time) figured it was primer depth on old brass, after noticing some variation in primer depth. I bought new brass and changed out the spring. I set protrusion to match previous depth, as it was within spec, but upper end of range
With the new spring it would misfire 1 in 10 times. Moved it forward... 1:5. Moved it back to minim. Zero issues since and even shot up all the old brass loads. Would have never guessed you could have too much protrusion, but its how you use it I guess.
The pistol was a recall for a short pin.
I did have a miss fire on another rifle (remington) on an antelope hunt a really long time ago, now that I think about it. I never figured that one out, as the rifle had 100s of round through it before and after with no issues. Figired it was a dud load, but looking back it was probably dirty because it had a light strike.
The light hit, says to me mechanical, probably lube or corrosion on the spring, assuming it wasn't cleaned. I always work the bolt and firing pin before hunting, and don't use much lube, and always inspect firing pin springs. Some rifles are very east to inspect, others are a PITA to get apart in the field.
