127 vs 133-135 will give you zero edge in accuracy. Edge in confidence is all in your head.
What you Can Possibly get (and its real) is spending thousands on travel expenses and coming up on Chrono that clocks slightly slower..... and you get to shoot a Major match for Fun and No Score.
Loading at least 5+ PF SHOULD give you confidence that you will never fail chrono. Your gun will cycle faster more reliable. Your dot will return faster for your follow up shot.
But this is my personal opinion and I shoot Open with occasional CO here and there. LOL