https://www.homebrewtalk.com/wiki/index.php/Malts_Chart
Here's a link to help with the efficiency calculations
Check out the link above (article). It really explains the efficiency % calculation well.
I mill at the LBS. I've done three AG's and two of three were well off the expected O.G. Maybe I'll invest in a mill.
My calculations for water are great, but I'm a little confused on the reason for the "Mash Out." What will raising the temp do for getting the sugars out. I like the method the guy used in the article, but was wondering how long I should let the 2nd and 3rd batch's of the sparge sit before I sparge. Seems I will thoroughly rinse the grains.
The beers that have been off, but most likely they will be good beers. I hope the ABV drop, looks like 1% (from 5.3 to 4.5 and 5.5 to 4.3) on each beer I didn't do too well on efficiency won't take away from the taste. I've been told before that some of the best beers people have made (homebrew) have been off mistakes. Don't want to make it a habit, but that's the fun in homebrewing.