It isn't so much that you are going to see any large increase in accuracy with a longer barrel but if you want to minimize drop and above all maintain as much energy as you can down range you'll want those extra few inches. If you are just shooting paper don't worry about it much. You'll suffer more drop and wind drift will be increased but you'll still have a great shooting gun. You are already way below what most people would shoot at 26". It is all in what you intend to shoot and how far that is really going to dictate what you should go with.