Always scared the crap out of me to go pounding on concrete with a hammer loaded with a live round. I use the Hornaday Collete bullet puller.
4 years ago I had the chance to buy a whole case of Federal .308 Win blue box ammo that had been dropped off of a forklift and ran over. I needed brass and for the $12 price on it I figured I could rescue some of the brass. I took the die out of my Rockchucker and put the round in the shell head holder and would run the case up till it cleared the top. Grabbed it with the pliers and the raised up the handle till the bullet came out. I then weighed about 5 of the powder loads till I had a good average and then dumped the powder from all the rounds into a bowl. Some of the cases were kind of flattened (read that as some looked like a banana
) so I took the decaping pin out of the die and lubed them as best I could and run them through the resizing die. Surprisingly enough the cases would chamber after doing this. Some the bolt would be a bit hard to close but I I would re size those a second time and they fit. I then took the powder and loaded it back into the cases and then took the bullets which most of them had deformity's but were close to round although some of them the points were bent to one side.
Now here is the weird part. I figured I could fireform the brass back into shape by firing them and getting some trigger time in along with it. When I took those rounds out to the range with the bent cases and bullets they would shoot half way decent at 100 yds. Some groups were under an inch. But when I tried to go to 200 yds that was where the rub began. I would not of been shocked if I ht the other guys target.
It must take a ways before that bullet begins to show just how badly it is out of round or crooked. The ammo after fire forming really worked good though.