Originally Posted by mb82
Yes if your boil off rate is 1 gal per hour and unless your grain bill is huge I would think the 8 gal pot would work for that without a sparge.
Yes I agree, easiest approach is a full volume BIAB, I suggest 6 gallons strike water b/w 160 - 164 degrees, add 10 lbs grain and resultant volume of mash is 6.8 gallons, allow to mash 1 hour insulating the kettle w/ blankets.
Add approx. 1 gallon boiling (if possible) water to your kettle and stir well, let rest a few minutes and stir again. Remove bag, accounting for absorption of 1 gallon you are left with 6 gallons preboil. Boil down to 5 gallons. Little short, lets try a sparge.
Perhaps a simple sparge is better, Mash as above w 5 gallons, but sparge w/ 2.5 gallons in your cooler, total collected will be 6.5 gallons preboil.