Take it to your favorite gunshop and have them take it out
The above quote one of the best pieces of advice you will get on this.
If you do not know what your are doing, then take it to a gunsmith.
I sometimes shudder at so called "advice" given on these boards. Absolutely avoid wooden rods, they do not have the strength and as shown, will split and jam in the barrel. The pointed bullet acts just like a wood splitter would when you are splitting firewood.
A long rod flexes when hit, and hits the side of your rifling. Most cleaning rods are made from aluminum, so they don't really damage the bore, but they deform when hit, and they really don't have enough strength to knock out a well lodged bullet in the bore.
A good gunsmith can remove the bullet easily. He should have a special long drill bit with sleeves to put inside the bore so that the rifling is protected, and the drill bit runs through the sleeve. By drilling slowly and only a little bit at a time, and withdrawing the drill bit to remove the lead, he eventually will get a hole through the bullet. Then, he will use a larger drill bit and sleeve, and enlarge that small initial hole, without damage to the rifling. At that point, he should be able to push the bullet out, because the pressure on the walls is less and the jacket can collapse a bit.
Do not try this without the sleeve support because the drill bit will wander off center and hit the side of the chamber or rifling.
TAKE IT TO A GUNSMITH IF YOU DO NOT KNOW WHAT YOU ARE DOING!
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