The force required to push a bullet into rifling...

porpoise said:
180 pounds doesn't sound like much. Do you mean 180 psi?
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I think from Post #1, his press was applying 180 pounds force - would likely have been to the contact surface of the rear of that bullet - would need to work out the diameter - to get "square inches" to determine the "psi" value? 180 pounds force applied to 0.1 square inches is 1,800 psi? That Ron guy from Edmonton video - I think he said he was generating 20,000 psi with his machine, to pop that stuck cartridge out? OP is investigating a bullet stuck in the bore; that Ron guy was removing a cartridge stuck in the chamber of that rifle.
 
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Potashminer said:
I think from Post #1, his press was applying 180 pounds force - would likely have been to the contact surface of the rear of that bullet - would need to work out the diameter - to get "square inches" to determine the "psi" value? 180 pounds force applied to 0.1 square inches is 1,800 psi? That Ron guy from Edmonton video - I think he said he was generating 20,000 psi with his machine, to pop that stuck cartridge out? OP is investigating a bullet stuck in the bore; that Ron guy was removing a cartridge stuck in the chamber of that rifle.
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How do you know how much weight a press is delivering I assumed it would have a psi gauge and depending on the size of the cylinder 180 psi would be starting at thousands of pounds delivered force
 
Someone had the bright idea to see how quiet he could get a 9mm blow back carbine to run by greatly reducing the powder charge. He gave me the gun to disassemble and get the inevitable stuck bullet out of the barrel.

Couldn't pound the bullet out with a steel rod (wrapped in electrical tape to protect the bore). So, we put it in a lathe to drill out the center of the bullet, to enable pounding out the bullet with much less force.
This worked well, and to our surprise, THREE bullets tapped out, in a row just in front of the chamber. The barrel was not damaged.

The guy thought only one was stuck in there as the first two rounds extracted, ejected and chambered in what appeared to be normal operation!
 
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