Rifles have the advantage of long range accuracy, because spinning bullets have far flatter and more stable trajectories than balls fired from smoothbore muskets. Muskets had the advantage of a faster rate of fire. A muzzle-loaded weapon required the bullet to fit snugly into the barrel. For a smoothbore weapon this can be a somewhat loose fit, but in the case of a rifle, the helical rifling lands in the barrel have to cut into the bullet to make it spin. The fit needs to be sufficiently tight for the bullet to engage the lands in order to impart spin; otherwise the bullet will wobble as it goes down the barrel, destroying its accuracy. Furthermore, if the barrel-to-bullet seal is not tight, gases will blow through the rifling grooves and around the bullet, compromising muzzle velocity, accuracy and the bullet's terminal energy at the target. Their greater accuracy and range made rifles ideal for hunting, but the slower rate of fire was a significant impediment for widespread military use, along with the fouling caused by normal firing which made them steadily more difficult to load.