If your looking to get your gun dialed in for 50 yards. There is a easy way to figure out the "rough" adjustment to get you close if you choose to get a taller sight.
Take your 50 yard groups(now I'm going to us yards/inches) measure your needed correction from the center of the group you fired to where you want the group to impact.
You mentioned 8" high so we will go with that. So
Correction need is 8" multiply that by your rifles sight radius....approx 20" 8x20=160" now dived that by yards converted to inches.... 50 yards x 36" = 1800. Then devide 160/1800 = .088 . Your front sight will need to be .088 taller to get you closer to your point of aim.

As mentioned you will thank yourself later if you get a front sight that's a good amount taller. Especially if you bulk of shooting will be from 100 yard or less. I have a 1903a3 that I did my 100 yard zero with the rear sight set on 300m
I adjusted the front sight until my poi vs poa @ 100 yards falls into the 10 ring of a SR1 nra target with a 6 o'clock hold on the black. This gives me some wiggle room when shooting closer in and more than enough out to 500 yards which I don't do much anyway.