For starters, the load the rifle is calibrated for (assuming an 88/05) is a 154gn flat based spitzer going 800m/s at the muzzle. It is also calibrated, depending on model, for either a 300m or 400m zero, so they typically all shoot high at 100M.
If you need a taller front sight, you may have to modify a sight blade from another firearm or see a gunsmith.