http://www.wonderland.org.nz/rnss.htm
Decent link about Russian missiles.
I understood the SS-N-27 to be armed with a APR-2 or 3 rocket powered torpedo... but that could be wrong. That is what the link about says but the APR series weigh bewteen 450-575Kg
Hard one to find though this link is good..
http://www.navweaps.com/Weapons/WTRussian_post-WWII.htm