10 seconds

[Rusty Gilbert]

I've never called it (in 25 years of games), nor have I been in a game where it was called.

If someone is tooooooo slooooowwww, I step up and tell them to shoot quicker.

However, I could envision the situation where it might be necessary to call. Just pretty rare.

[mj]

i witnessed it called one time. It was probably more like 12 seconds.

I have never called it. For some reason my count seems to slow down when I get around six...