.. Problem with my rear sight........

[hawgslayer1]

:scratch: 

Was at the range yesterday with my T/C Renegade .54 cal ml'er and everything was working great until I tried to zero in at the 25 yard bench. My first 3 shots were touching at the top (dead center 12 o'clock) of my Birchwood Casey sighting in target that's broken down into 1" increments. I was happy thinking that all I had to do is lower the rear sight and all would be ok. I kept lowering the sight screw and by the time I was done, the best I could get was still 3.5/4"s high at 25. I was dead center but hitting the top of the orange ring when I aimed dead center. Screw won't turn any more.
I was shooting 50 grains of 3F Goex with Remington #11 per/caps pushing out a .530 ball w/ a .015 lubed patch.
Any suggestions on how to rectify the problem :?: 

Ray.............. :scratch:

 

[Okie Hog]

I kept lowering the sight screw and by the time I was done, the best I could get was still 3.5/4"s high at 25. I was dead center but hitting the top of the orange ring when I aimed dead center.

IMO:  Shooting high is a problem with some TC conventional guns.   Sometimes they shoot 4-6" high at 50 yards with the sight lowered to its limit.      

You need a taller front sight.

 

[MLN1963]

Falcon nailed it. A taller front sight is in order. How much taller? You need to research what others have needed to save you time and money.

 

[Spitfire1]

Had the same problem with my Ardesa .32 , only fix was to use a new taller front sight.

 

[MLN1963]

http://www.brownells.com/.aspx/lid=13093/guntechdetail/Sight_Correction_Calculator