I ran into that same problem . . .

by Kentucky, Monday, November 25, 2013, 11:41 (4021 days ago) @ rob

. . . with some .357 Maximum rounds I acquired in a "package" buy. The reload info I got with them scared me to death, so I decided to pull the bullets and start over. The first three I tried to pull with the intertia (hammer) type puller resulted in the same thing you show, and I was afraid I'd break the puller. Fortunately, there were only a dozen or so that were questionable, so I just cut the cases off behind the bullets, dumped the powder, and scrapped the rest. Hated to lose the brass and bullets, but . . .

Very strange. I'd never have believed it if I hasn't seen it myself.