BSA mags
I used to use one in .22 a few years back, & 'later' mags did work - but it was a while ago & the specs may have changed again since. I also tried an aftermarket mag. Think I got it from Blackpool Airguns.
It was a cracker of a gun when working properly. Mine developed a trigger fault (broken hair spring) & an indexing fault - I think my grandson was not mechanically sympathetic & 'Winchestered' it.
But I alway had problems with the original mags - I have since heard they could be very awkward with certain pellets.
Webley Mk3 x2, Falcon & Junior rifles, HW35x2, AirSporter x2, Gold Star, Meteors x2, Diana 25. SMK B19, Webley Senior, Premier, Hurricane x 2, Tempest, Dan Wesson 8", Crosman 3576, Legends PO8.