RE: Jag Broke in Barrel
I use a range ramrod. All this rod does is clean my rifles and load them on the range. I do not hunt with it. It is a solid stainless steel rod 34 inches long. It has a T handle on one end. A bore guide, and like they already said, check that jag. If it is loose, it will break off. Since you need a new jag, they make a spin jag that will not come loose as easy. You might want to look into one of them. They are nice. I have one.
Also be careful how tight a patch you run down it. Sometime you can get them too tight. When they are real tight, the jag will unscrew with the rifling.