Abstract: A gun magazine speed loader that can load an entire magazine simply by pulling the magazines external follower in a downward motion. Rimmed cartridges are aligned nose down and side-by-side in a loading channel and the magazine and speed loader are then tipped up toward a vertical position with the magazine below the loader. By passing the stream of cartridges through an “articulator” that articulates the nose of the cartridge and feeds cartridges ‘rim-first’ and up through feed lips and into the magazine, the cartridges fill the magazine in a continuous stream, essentially at the speed of gravity-falling cartridges under control of the external follower. The articulator has no moving parts and operates with rimmed cartridges and with curved or low-rake angle magazines having an external follower.