Doug: Call S&W and get the proper height front sight for that revolver. I had the same problem with mine and found the front sight too short. S&W sent me the correct height front sight and a new sight pin, and all with instructions on how to get it out - instructions said something about a small drill bit, so I let the gunsmith handle it.
There was a significant difference in height size and I was a bit surprised at that but now my 300 gn loads print where I want them at 50 yds. HTH.