I'm sure it's possible to do.

I'm also sure that it's very important when loading a muzzleloader to push the bullet all the way down to the power, so there's no gap.

I'm equally sure that I'd rather just pound the bullet around than fuck around and find out.

I wouldn’t try that either. Pressure is a fickle mistress and will bend you over, stick it in and break it off with no warning at all.

You could load a special case to get that out but there are other ways. You could drill it and tap it then thread in a bolt put the bolt in a vise and using a soft hammer tap on the frame. You could fasten a slide hammer to the bolt threaded into the bullet and use the slide hammer. You could also get a brass or steel rod and cut it onto short sections and drop the sections in the barrel till you can rap on a pin section end with a small hammer. Yes I have ball peen hammers that small.

You might even get that out with a rubber tipped air nozzle. You could also try and hydraulic that bullet out using a grease gun.

I unloaded my original damascus barreled 16 gauge after hunting by using its original ramrod because it has a cap on one end of the ramrod that conceils a screw fastened to the ramrod for that exact purpose.

Is that revolver circumcised?