I had given my son a new Savage 110 in 30-06 about 20 years ago. we worked up a load and he was good to go for buck season. Nasty cold opening morning, his Savage wouldn't go bang. Luckily we always bring a spare rifle, he took the spare rifle and shot a buck a day later. Before going home we went out on the porch and took a shot the gun fired perfectly and hit the point of aim. When I got home I called my gunsmith and asked him if I could bring it in. He told me to pull the bolt and soak it in a coffee can full of kerosene for a week, swirling it around from time to time. Then do the Naptha rinse and lube it LIGHTLY with a goooood gun oil. Never had that fail to fire problem again. He says from the factory they can get clogged with not so good quality oil that turns to sludge in cold weather. Just food for thought.