Over Calculated water volume affecting flavor?

Ok I posted here a few times about have my beers turn out really grainy tasting. It is really starting to drive me nuts. Anyways, I havent been really careful with water calculation on the last few batches and have actually be using the wrong equipment profile unknowingly. Anyways, were if I used the right profile I would have ended up with 5 gallons of finished wort, I end up with 6.5 with the one I was using. Thats an extra gallon and a half for a 5 gallon recipes. Now, is it possible that the extra amount of sparge water and mash water could be causing this grainy flavor? I batch sparge so I'm not sure if it will or not, but its the only thing I can think of that could be causing this. PS: It's driving me nuts.

Anyone? Can this be the problem?

scottyg354 said:

Anyone? Can this be the problem?

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I am new as well but I do know you should be trying to hit your target OG. I have come up short repeatedly and just boil off any extra water till I hit my target. That said do you vorlauf? You might be getting grain particles and husks in your wort.

Post your recipe and process and maybe we can see what's going on.