- Tue Sep 12, 2017 2:37 pm
Take a look at Dawson's sight calculator page: https://dawsonprecision.com/sight-calculator/
If you can measure your current sight height, the sight radius of the pistol, the distance to target and the different in POI (Point of Impact) vs POA (Point of Aim), you can use their calculator to determine the sight height that you need for POI and POA to be the same.
You could also take that potential sight height and mark it on the front sight and test to see if that will work for you.
In general, and in my experience, precision pistol shooting does not use the fiber as the primary alignment point. If you're having trouble aligning the top of the front sight with the top of the rear sight and centered within the rear notch (equal height, equal light), you may want to investigate some other options, such as prescription shooting glasses which will help you focus (at least your dominant eye) on the front sight, stick on reading lenses, or a diopter attachment.
I've only used the diopter attachments and the adjustable ones are much better than the fixed ones, but at a much higher price.
My father-in-law uses the adjustable Merit Optical Attachment http://www.meritcorporation.com/products.html
and I use the fixed Lyman diopter https://www.midwayusa.com/product/936878/lyman-hawkeye-shooters-diopter-optic-aid
My father-in-law was having trouble seeing anything in focus with his eyes and didn't want to put electronic red-dots or scopes on his revolvers and was considering the same as you: fiber optic front sights. But, after we got him the adjustable diopter for Christmas a few years ago, he's back to shooting his revolvers with totally blacked sights as well as he ever did!
Even the fixed Lyman one that I use helps me align iron sights on rifles and pistols, but obviously won't work well for action shooting sports like USPSA.
It appears that the Lyman one is now discontinued, but I still see it on shelves sometimes.
I hope this helps!