of the rifle, and typically reduce feeding reliability due to the varying spring tension from a full to a nearly empty magazine. Detachable magazines in general are usually less durable than internal magazines. The complexity of a self-loading mechanism makes self-loading rifles more expensive to manufacture and heavier than manually-loaded rifles. The semi-automatic M1 Garand weighs about 410 grams (0.9 lb) more (seven percent heavier) than the manually-loaded M1903 Springfield it replaced. American development of a self-loading infantry rifle began with the .276 Pedersen cartridge in recognition of the difficulties of producing reliable self-loading mechanisms for more powerful cartridges. Although the M1 Garand was ultimately adapted to fire the .30-06 Springfield cartridge at the insistence of General Douglas MacArthur, most subsequent self-loading rifles for infantry use have been chambered for less powerful cartridges to reduce weight making rifles easier to carry. Select examples Civilian uses for semi-automatic rifles Semi-automatic rifles are commonly used by civilians for sport shooting, hunting, and self-defense, as they are cheaper and less heavily regulated than their fully automatic counterparts. Sport shooting Target shooting has a long history, pre-dating the firearm, as the first example of it would be archery, and as weapons that demanded user accuracy developed, so did their usage in competitions. Today, semi-automatic rifles are one of the more popular firearms in sport shooting. There are various types of sport shooting, ranging from rapid fire shooting, target shooting, which is predominantly accuracy based, and distance shooting. Shooting clubs in America became increasingly commonplace in the 1830s, and have since grown in popularity. Semi-automatic rifles are commonly used in sport shooting events because of their accuracy, versatility, and their light weight- which has invited more people, specifically women and children, to compete as well. Hunting Semi-automatic rifles have grown in status among hunters. Many hunters are adopting semi-automatic rifles, particularly AR-15 style rifles to take advantage of their compact design and modularity. Effectively making it easier to traverse rugged terrain while tracking a target. And providing a large variety of customization ranging from scopes and muzzle devices, to different calibers. Semi-automatic fire greatly assists in maintaining one's sight picture, which is especially important when follow-up shots are required. Due to their demand, the manufacturers of semi-automatic firearms have greatly increased the effective firing distance of their products, compared to the first semi-automatics sold on the civilian market. Self defense Semi-automatic rifles are sometimes used