There is no bullet in the picture, it is a cartridge with a shot capsule. likely by cci.

.357 rat shot
Early 70's Thompson Contender .44 hot shots

Speer?
Neat! Some interesting history here as c-fbmi points out. Obsolete for at least 50 years, an interesting write up can be found here:
http://www.fourten.org.uk/mwpre410.html




























