I would no more buy such a gun with that hole than I would if someone took a pre-lock S&W and drilled a hole in the frame.
Over at www.smith&wessonforum.com, a gentleman sells a product called "The Plug", comes in different finishes. Voila! No Hole! Just search for it in the accesories for sale forum. They are very nice.
...and then filled it with a plug. As long as there are used...
Sometimes you get what you pay for, sometimes you only pay more for what you get.
Three shots are not a "group"...they are a "few".
If the Bible is the literal, infallible, unerring word of God...where are all those witches I am supposed to kill? (Exodus 22:18)