I think that’s a starburst, incendiary ammo. Should have it imbedded in the copper bullet. Shoot one, when it hits you should know.
Green tip should be lap. Take a magnet to it and see if it sticks.
I was thinking of the yellow plastic Finnish blanks; most blanks are crimped although those plastic ones were not. I think the others may be right. The head stamp seems to line up w/ Chinese and may be tracers.