It works but . . . - Butler Creek 50 Round Hot Lips Loader 10/22

This loader will load a magazine a lot quicker than the the thumb method and many other loaders but you do need to take it slow so that you don't dent and deform the round. With the right technique (turn, pause, turn) you can load three 25-roumd mags in about a minute and a half. If a jamb does occur, by simply rotating the loader to the left you can un-jamb the loader easily. If the jamb occurs in the loader cam you might need to remove the mag and back off the loading cam. Not too bad and you save your thumb!