I also swear by Kroil. A Gallon jug in the garage, and a small bottle in the cabinet with my reloading stuff/gun stuff. I just took a stroll on Ebay and found most any brand of wrench needed for about $10-15. It's a lot cheaper than iffen you goober up the choke notches and the rifle threads! I don't imagine you have a thread chaser for those proprietary ones, but correct me if I'm wrong.