That bullet looks just like bullets a very dear friend of mine's father use to make.
Mr. Sherod use to own a old school roofing company that did pretty much only copper roofs, guttering, sky lights and such. Only old world craft would do.
Anyway with a ready supply of copper and lead of all kinds, he made bullets in his spare time. He would make copper tubing to his spec. Cap one end with a small pin hole in it. Then braze a simple twist fit fitting of some sort on the other. He would then put the tube in a heater or furnace of some sort hanging down in the heat source. He would get the tube hot then flux the inside some how. Then poor his alloy. He then pulled the tube and put a mating fitting to the one he brazed on the tube and put hydraulic pressure on it and let cool. Couldn't of been to much pressure. But it was enough to make the dia. of the tube get larger by .020 or .030. The tubes were 5' to 8' long.
Once he had his lead copper tubes made and cooled down he would roll them to perfect dia. in a three roller rotating press. He had a very old french made lathe from the 1860's, belt driven with a center quick release chuck on it. He would feed the copper lead filled tubes into the hole chuck drive shaft and support the martial with pipe support. The chuck had leather caps on it to keep from scaring the copper.
He would feed in the tube. Lock the chuck, cut off the cap and face off the bottom of the first bullet. Then he would flip up a stop on his tool holder. Feed the tube in until it touched the stop, lock the chuck then flip up a device that looked like a copper pipe cutter. Except the cutting dies rounded twords the inside of the dies giving the bullet its rounded look as he cranked on the handle. Sort of a pinch and role as the lathe was running. Bullet would drop off into a pan. He then fed the stock again the the stop then straight cut the back of the next bullet. Then two bullets in the pan.
Once he had all the bullets he wanted he took them to a old looking press. He would drop a bullet down in a hole push a 3' lever down. Then push it up and the bullet would drop out of the bottom of the press. The finished bullet would then have a crimp band and the bottom of the bullet would have a slight roll over if not a boat tail.
If these bullets were to be hunting or target rounds he would set down at a old counterbalance scale and weight them. If they weighted to much he would take a hand held little scoop tool and take alloy off the bottom side of the bullet to make it weigh perfect.
I am not saying in any, way, shape or forum this is one of his bullets. But those pictures did bring back some old memory's. His bullets looked just like that.