To the outside or inside? I guess it would just be easier to estimate how far apart your hands are, I know the knurling on the bars at my gym are different bar to bar. Basically my grip is maybe just a hair wider than shoulder width. I also have long arms. Super wide puts WAYYY too much stress on my shoulders. But ultimately if your legit close grip bench is much stronger than a shoulder width or wider, I'd say eventually your gonna have to work on something or it's gonna become a limiting factor in powerlifting. Besides that it would look super strange to bench close grip in a comp or something. Unless you won, then everyone would just think you were showing off haha