while a staggered feed magazine (sometimes called double-feed magazine, not to be confused with the firearm malfunction) consists of a wider set of lips so that the second cartridge in line forces the top cartridge against one lip. The staggered-feed design has proven more resistant to jamming in use with double-column magazines than single-feed variants, since the narrowing of a magazine tube to a single-feed induces extra friction which the magazine springs needs to overcome. Some magazine types are strongly associated with certain firearm types, such as the fixed "tubular" magazine found on most lever-action rifles and pump-action shotguns. A firearm using detachable magazines may accept a variety of types of magazine, such as the Thompson submachine gun, most variations of which would accept box or drum magazines. Some types of firearm, such as the M249 and other squad automatic weapons, can feed from both magazines and belts. Tubular Many of the first repeating rifles, particularly lever-action rifles, used magazines that stored cartridges nose-to-end inside of a spring-loaded tube typically running parallel under the barrel, or in the buttstock. Tubular magazines are also commonly used in pump-action shotguns and .22 caliber bolt-action rimfire rifles such as the Marlin Model XT. Tubular magazines and centerfire cartridges with pointed (spitzer) bullets present a safety issue: a pointed bullet may (through the forces of recoil or simply rough handling) strike the next round's primer and ignite that round, or even cause a chain ignition of other rounds, within the magazine. The Winchester '73 used blunt-nosed centerfire cartridges as the .44-40 Winchester. Certain modern rifle cartridges using soft pointed plastic tips have been designed to avoid this problem while improving the aerodynamic qualities of the bullet to match those available in bolt-action designs, thus extending the effective range of lever-actions. Box The most popular type of magazine in modern rifles and handguns, a box magazine stores cartridges in a column, either one above the other or in staggered zigzag fashion. This zigzag stack is often identified as a double-column or double-stack (The double-stack is much more common because of its ability to store more rounds), since a single staggered column is actually two side-by-side vertical columns offset by half of the diameter of a round. As the firearm cycles, cartridges are moved to the top of the magazine by a follower driven by spring compression to either a single-feed (center-feed) position or side-by-side (staggered-feed)