This may be common knowledge for some, and may not apply to others at all, but it's something that I just realized today and if anyone else is in the same situation, it may save them some time.
For the longest time I was a black on black sights shooter. I liked my POI to be at the tip of the blade at 25.
Last year my accuracy was degrading and I was having trouble maintaining a hard focus on the front sight, so I switched to a fiber optic front at the same time I switched to a Glock. I got the sights dialed in to print where I want 'em to, but was having a helluva time shooting the guns. I thought it was the guns.
My Gen5 19 was shooting just a touch high at 25, so last night I swapped the .235" for a .250".
I went to the range to verify POI today and the difference in accuracy was dramatic. Nothing about the sights or pistol changed, just a .015" on the front and a different hold and I shot some of the best 10 round groups I've shot at 25 yards in a looong time!
Drive the dot works for me with a fiber optic front, tip of the blade, or a 6:00 with anything but a solid black does not.
YMMV