A speedloader for a shotgun having a tubular magazine includes an integral pulley system to minimize handle travel in delivering a plurality of cartridges into the magazine. The speedloader comprises a frame with a channel therethrough dimensioned to receive a plurality of cartridges. The frame carries a handle on an exterior longitudinal track and, inside, a pusher that travels from the first end of the frame to the second end of the frame in response to movement of the handle, thereby expelling the cartridges from the speedloader and injecting them into the magazine. The pulley system translates movement of the handle to movement of the pusher and reduces the distance the handle needs to be moved to move the pusher the full distance to reload the shotgun.