For the record, NO bolt action bolt should have oil/grease in it. All are designed to be run dry and cold weather standard procedure is to degrease anything that moves. Only two places should be oiled/greased and very lightly: the back of the bolt lugs and the cocking cam. Otherwise, no oil or grease anywhere else including the trigger. It hardens in cold weather, and just collects dust that will wear your firearm. I'm not talking rust prevention for the exterior, only moving parts.
I have yet to see anyone that doesn't over oil their action. They don't need any oil to work fine for decades of hard use. The parts are hardened steel and other than the two mentioned above, none see high loads during cycling.
Light strikes are caused by the sear dragging on the cocking piece after firing. This is usually too little overtravel in the trigger. When springs are changed, other screws get adjusted. At least that is what I typically find when one comes into the shop.
Jeremy