Today I brewed a Columbus/Centennial/Cascade ale that was going to be a pale ale, but due to a considerably higher than expected efficiency, ended up an IPA. I got about 79% efficiency and 1.071 OG, 8 points higher than I targeted. I believe it was primarily due to treating not just the mash water as I have always done in the past, but also the sparge water, per Martin's v1.12 of Bru'n Water.
But also higher OG due to boiling 15 minutes longer than I input in ProMash.