All my Kimbers wear fixed sights and all shoot right on point of aim with all loads tried. For practice I would use any decent quality inexpensive FMJ 230 gr. such as UMC (Remington), USA (Winchester), or American Eagle (Federal). For practical defensive work I would use either the Speer Gold Dot or the Federal Hydra Shock JHP. Now I would use the heaviest load that would reliably expand out of your short barrel. Start with 230 gr. and work down through 200, 185, 165, etc. Don't go any lighter than you have to. You can test expansion in milk jugs or 2 liter bottles filled with water and lined up. You can also test penetration. It usually takes me about 4-5 jugs to catch a good expanding hollow point.