for pass throughs it's usually best to keep the arrow on the heavy side, especially at the longer distances. For the 25 grain weight change you not talking enough to really worry about one or the other though, either would have enough, and alsowith that little bit of speed increase your not talking about a flatter tajectory either because I doubt you will see the differance unless you shoot out past 60-70 yards. then you will see the heavier arrow carrying better than the lighter one..

speed speed speed highly over rated........ nothing wrong with 252....