I wish S&W would use something other than a "railroad tie" for a front sight on their revolvers. About the only handgun I can shoot decent groups with is a Contender with its narrow front sight and narrow rear notch. My offhand shooting is about the same whether revolver or T/C, but when I have to sight-in it's always a chore. I've tried the Merit aperture and it helps a lot, but I don't do well with a front sight that's as wide as a bus.
I really want to use my 617 for squirrel hunting, but it's not gonna happen. With a scope mounted, it will do 1 inch at 25 yards with a variety of ammo, but I don't want a scope on my handgun.
Rant over.