dubltap, First off, you didn't mention your barrel "length"! The factory sight height is going to vary according to barrel length. On my 4" barrel stainless Security-Six, the factory front sight is .281" from the "top" of the ramp to the "top" of the sight. For my hold and shooting habits, that height is adequate for "me" out to 50 yards which is about the max distance I shoot it, usually at fox, coyotes or porcupines! As flatgate mentioned, there are "other" factors that also play into what height "you" may need according to your shooting requirements....................Dick :wink: