i just did my first original batch of all grain it was suppose to be an oatmeal stout. Shooting for 1 gal batch. I ended up with 1/2 gal and my target ABV was 4.5. My final is 8.2. I used calculators and I’m pretty sure my ratios were correct. I think my problem is I have a 10gal mashtun and a wide 40qt boil pot. I think they are to big to do to little of a batch and I ended up lossing more than anticipated. Any insight for a rookie?