9%-10% stout, will the grains fit?

[Grimsawyer]

Got a 37.75lb grain bill and a converted keg to mash it in. Need to fit that and 47.19 quarts, 12(ish) gallons of water in there. (I usually round up to the closest gallon) Will there be room in my mash tun or if I want to go this big am i just going to have to invest in a nice big cooler? I've got a buddy in Iraq that is coming home in november and he's hungry for something big and dark. I want to make sure there's enough for him to get his share, oaked and not. Here's what i'm playing with:

11 gallons at 75% brewhouse eff.

31.00 lb Pale Malt (2 Row) US (2.0 SRM) Grain 82.12 %
3.00 lb Oats, Flaked (1.0 SRM) Grain 7.95 %
1.00 lb Black (Patent) Malt (500.0 SRM) Grain 2.65 %
1.00 lb Carafa II (412.0 SRM) Grain 2.65 %
0.75 lb Chocolate Malt (450.0 SRM) Grain 1.99 %
0.50 lb Caramel/Crystal Malt - 40L (40.0 SRM) Grain 1.32 %
0.50 lb Caramel/Crystal Malt -120L (120.0 SRM) Grain 1.32 %
3.00 oz Chinook [13.00 %] (60 min) Hops 43.4 IBU
1.50 oz Simcoe [13.00 %] (20 min) Hops 13.1 IBU
1.50 oz Simcoe [13.00 %] (10 min) Hops 7.9 IBU
3.00 oz Simcoe [13.00 %] (0 min) Hops -

2.00 oz Oak Chips (Secondary 7.0 days)

WYeast Rogue Pacman

Estimated Original Gravity: 1.092 (1.102@83% brewhouse eff.)
Estimated Final Gravity: 1.023
Estimated Color: 41.3
Bitterness: 64.4 IBU

 

[McKBrew]

Use the can I mash it calculator on this page. You might be able to pull it off in a keg, if you keep your water to grain ration on the low end.

 

[Grimsawyer]

1.25qt/gallon is what i use.

 

[BigKahuna]

Use the can I mash it calculator on this page. You might be able to pull it off in a keg, if you keep your water to grain ration on the low end.

+1 Green Bay Rackers ROCKS! The strike water calculator works very well too.

**edit.
This will take 14.82 Gallons of capacity for the grain and the water (1.25 Qt/Pound)

 

[Yuri_Rage]

I regularly mash grain bills like that in a 60 qt Igloo Ice Cube. The geometry works for batch or fly sparging, and you can make up to 15 gallons at a time, depending on the grain bill.