Groo here
If your gun shoots low, your in good shape.
Find the load you like and file the sight till it matches.
Then measure and get the one you like .
Ps although the old timers [ ahem] used the gold bead for targets.
[ Sized to match the target and form an 8]
Now we would use them for fast shooting [ like a fiber optic rod]
I like mine, it's fast.