There could be several contributors to the problem. Over oiling, carbon, junk from the hunt or maybe storage (keeping the rifle in a rifle case that has lint), mixing of lubes (WD40 and oil don't mix well), or the wrong lube. A good cleaning is most likely a good place to start. When cleaning the bore always lay the rifle on it's side. It keeps solvent and oil out of the gas system. Hey, opening day is MONDAY ! Take the forearm off, open the action and hose it out with carb cleaner. Put a few drops of oil (very few) where the friction is and try it at the range. Dave