Most problems with high shooting handguns can be traced to the bullet weight, not whether cast or jacketed. The factories regulate the sights for the common weight range of the round chambered, ie; 30 Carbine common factory loads are 90-110gr. Most heavier bullets would be beyond the adjustment range of the sight. A cheap way to make up for this with Ruger sights (since the blade protrudes above the sight body) is to take the rear sight blade out of the sight body and with fine files cut the notch deeper. The range would be a good place to finish this project. Now, with the blade reinserted and the sight at its lowest setting, begin to file off the top of the blade. After a few good strokes, try it on target. You may want to remove the blade again as it nears the sight body. Alternate filing and testing until you get the results needed then touch up with cold blue. The reason I suggest this is that replacement blades are cheap and easy to get in case of screw ups and this operation gives the effect of a taller front sight without the heavy gunsmith bill. Not a cure all, but worth a try.