First Batch Sparge - Efficiency Guess?

[tcguzzler]

I'm planning to try batch sparging for the first time Saturday. Anyone have a suggestion for a first guess batch sparge efficiency if I have been getting 85% when fly sparging in the past?

[slothrob]

If you collect similar volumes, you should get close to your typical efficiency.

I'd probably round down for the first one, just for a little insurance.
Plan on 75-80% but keep some extra hops on hand in case you get 85%.

I get 80% efficiency from my batch sparge system, but I know at least 3 people who hit 85% regularly.