How much 'priming' for a 9-gallon batch?

[thedrayman]

Just fermented my first 9 gallon brew for putting into a cask. How much priming sugar would you recommend I need for this quantity of ale?

 

[jamesb]

I've used 90g with success before.

I prefer crash cooling it a couple of points before it ferments out and then casking it without adding priming sugars though.

 

[thedrayman]

Thanks very much for that, and as nobody else has posted a reply, I'll try 90g this time. Cheers