Rocket artillery tends to be simpler, lighter and more mobile than guns or howitzers, most of which must be emplaced. Guns tend to have better accuracy, consistency and range, while rocket artillery is light enough to be employed closer to the front lines and excels at saturation fire, expending its entire ammunition load in a single barrage on a target. The saturation fire produced by rocket artillery is only somewhat approximated in effectiveness with gun artillery via the time on target barrage method.