Hey, yup i usually drive to armstrong and pick up a few sacks from them. I have also gotten most of my specialty grains from Dans, but lately iv been getting stuff from hopdawgs out of vernon. I havnt been totally happy with gambrinus lately though, so im gonna try out some canada malting or something like that.
Definitely a US gallon, and it occurs to me it might be better to say the recipe is for 11 gallons in the kettle and 10 gallons finished due to losses to trub and tubing. But i recommend you tune the recipe to your systems volumes and efficiency.
The N. Brewer is 9% AA and the perle is 7% AA.