Mcmarlin
There is a sight adjustment software at realguns.com that will tell you how much higher a front sight you will need
Ex. my cb with 26" barrel was shooting 6" high at 100yds. with my wrgs sight adjusted all the way down. the fix? a new front sight that was 0.043" higher. In practice I"d get one a little higher than that so my sight didn"t have to stay adjusted all the way to the bottom
John