My opinion, no it absolutely will not matter at all. However, there is an anal side to me that acknowledges that tradtional bow hunting has more uncontrollable variables than I care to count, so why not control the variable that are quite easy to control when given the opportunity?
5 grain washers, removing 5 grains from brass insert, etc etc are simple fixes to a relatively easy variable to control.
Because in this game on variables, I want as many of them as possible to go away.
my $0.02