Help with .223 identification

[BigBadJohn]

I got an unmarked box of these in a crate of reloading stuff I acquired. The case is stamped HP .223 5.56. the upper half of the bullet seems to be plastic,does anyone know what they are? I couldn't find anything like it on Google.
Thanks
BBJ

 

[layusn1]

Check this link

http://www.igman.com/ammunition/codes/H/HP-Austria.html

 

[BigBadJohn]

Thanks for the reply,
Do you know what it's used for ? practice maybe?

 

[layusn1]

Hmm, I dunno, never seen one. Keep one for your collection.