What target is used for ISSF free pistol? By googling around I found that it should be approx 50cm across - does anyone know what that target is called?

And another thing. Is there a target that is proportionally sized that can be used at 25m for a roughly equivalent level of difficult?

I ask because I have just bought one and intend to take it to the club (Croydon) later in the week to try it out. I need to know what targets to ask for.

Cheers,

U.