Dave,
Are you talking about the old Norma 512 and 513 bullets? I forget which one was which now but one had a silver colored jacket and the other a copper colored jacket but a magnet would stick to one or both of them. I may still have some of them laying around somewhere (not a large quanity though), and I might know of one other source also. He might have a couple hundred.
We use to cut the noses of these bullets in a lathe and they would open up very well on long range deer.
Steve