Got them for all but the 7.62 x 51 mm.
They are magic, because you can fill A LOT of 5.56 x 45 mm magazines VERY quickly and your thumbs are deeply appreciative.
My next favorite is probably the .45 ACP, because yeah, it is only 8 rounds, but they are big rounds against a stiff spring.
LOL! Finally got one for the 9’s with multi round double stack mags. Uh, I mean if I needed that. Wheel guns, no probem. :-) Have a great weekend.