I found this in a lot of old mixed ammo. It stood out because the bullet looks different. I weighed the round and it also weighs about 40 grains more than the other Russian ammo in the lot. The headstamp is 17 58 (Soviet- right?).
The bullet itself is silver colored with a little of what looks like gold-colored plating that is mostly worn off. I can’t see any sign that it’s been messed with or reloaded somehow, and the rest of the ammo was mostly Russian from 1950 and after. A few rounds had no headstamp at all but otherwise looked like standard Russian or Chinese copper-wash stuff.
Any idea what this might be? I thought about pulling the bullet to look at it, but decided not to in case it turns out to be something collectible somehow.
Another question- is any of this old Russian ammo worth more than just shooting ammo?