>This is a single-stack magazine holding, if memory serves, eight
>rounds, with one of the stiffest follower springs ever fitted. That
>little button on the follower? Will bust your thumb if you try
>to work it manually, especially as you get farther down and the spring
>resistance gets higher and higher.

Obligatory I-have-no-experience-with-these-things question: Is it practical to hold the magazine vertically against a hard surface and then just push cartridges in from the top, without messing with the button? It seems like that ought to work; there's some sort of catch that holds them in once they're in, isn't there?