Did it work in warm weather? It sounds to me more like regular ole run-of-the mill "needs to be CLA'd" to me. I've shot in cold weather with no problems from regular lubricants but never in sub zero temps. For sub-zero I'm sure there are special lubricants available but mostly I've heard people talking about no lubricants at all for those kinds of conditions. As I said... I'm shivering in my office and it is 64 degrees... so what do I know about extreme cold conditiions.