Quoted:
You need to know if the bolt is locked (in battery) if it is a cleaning rod will not push it out. try the bump method. if the action is open, close it and (in a safe place) shoot it or use the bump method. If this does not work take it to someone who knows what they are doing to help. doug
I, for one, would not advise to shoot that round!
Here's my advise, take it for what it's worth:
Wear eye protection, please.
First off, engage the safety, drop the magazine.
Second, get that bolt back and locked in place! Use the "mortar method" if you need to.
Third, with the barrel up and pointing in a safe direction, place a few patches in front of the bolt as padding.
Fourth, with the butt of the rifle on the ground, the ejection port away from you and the barrel pointed in a safe direction, drop a cleaning rod down the barrel. The weight of the rod should force the cartridge out. You may have to drop the rod several times, but do so at arms length with no part of your body (or head) over the barrel. Do not "hammer" on the rod.
Fifth, dispose of the round. Do not shoot the round. You may pull the bullet (if you're a reloader, and can get it out) and reuse the components, but do not shoot the round.
If you don't feel confident about this, or you can't get the bolt back, take it to a smith or armorer.