I went to my LGS and they had .22 ammo on the shelves. Winchester 333 boxes and Gemtech "silencer subsonic" 42gr round nose.
I bought 2 boxes of the Gemtech. Its a black, wax lubed bullet on a plastic hanger in the box.
I did a web search, but their web site didn't offer much except to say that silhouette shoots would like it.

Anyone tried it?