I've been considering trying this method, I heard about at last years NHC. I brew on a Top Tier system with keggles. And I always brew ten gallon batches, fermenting in 6 gallon buckets. (No secondary)
Anyway, even the big beers I brew wich call for at most a 37 pound grain bill fit with room to spare. Just wondering what's the MOST grain any of you ahve gotten into a keggle for your mash? I'm thinking I'll only be able to do a 5 gallon batch this way.