All-grain Curious

[VikeMan]

I'm not convinced mash times really have much significant value on FG from my experience, unless you are REALLY mashing long (overnight) and to be fair, you'll probably get a higher OG value as well.

I don't know your definition of significant, but it sounds like there might be more impact than you think. You might want to check out these experiments.

http://www.homebrewersassociation.o...pdf/2012/1616-04 Attenuation - Gregg Doss.pdf
http://braukaiser.com/documents/Effects_of_mash_parameters_on_attenuation_and_efficiency.pdf