Especially in a revolver, that extra .01" is not going to mean mean Jack since it still has at least a .06" barrel/cylinder gap to go through PLUS the the forcing cone, before it sees the lands. HOWEVER
, what keeping them trimmed to the same length will
do is to make the same crimp and same crimp weight on every bullet the same.
Some may not think it makes a difference since pistols aren't as
accurate, they would be wrong though, sorry. I come from a L O N G barrel (S&W) family. A 6" pistol is a "snub-nose" to us.
My dad taught us to sight our pistols in at 75 yards so we had little hold over/under at 50 & 100 yards. At that distance, you can really tell how much better they shoot with detail paid to some things. Years ago (dumber and more broke) I never cleaned, and hardly trimmed my brass. I would also seat & crimp in one stroke. Not any more! As I paid more attention to detail, the groups shrank, significantly, with each "new" step taken. Especially the seating and crimping as two different steps. If you have concerns about seating the bullet closer to the lands for accuracy reasons, then you should also have concerns about having the same length cartridge for all cases, as it will effect the crimp and the accuracy much more than COAL. So keep them at whatever length (within tolerances) you want, but just make sure they are all that same length.
Hope that makes sense or helps.