Ammunition Selection is Important, also.

The important thing is to select the ammunition that works best in your pistol and that works best with you the shooter. You can't believe what's written on the box. That is data from the factory. You need real-world data regarding YOUR shooting experience with YOUR pistol. Barrel length, trigger pulls, with YOUR trigger finger, powder weights, and types DO make a difference in the reliability and accuracy of YOUR individual weapon. This entails shooting MANY DIFFERENT brands, bullet weights, types, and power levels. You need to discover which cartridges function best in Your firearm. What is written ON THE BOX was written by the company wanting you to buy their product. Treat it like what it is: an advertisement!