I can go home and try, generally in my experience, you can use the smaller ones a bit easier on larger guns rather than the other way around, especially if you have the ones with some play in them (I think there were two versions of the 10, one with play and one without?), you use the taper of the rounds to start them, release the loader, and let the rounds slide/drop in. They do make one specifically for the MKIII.
It also depends on your dexterity, I figured out how to reload a jframe with a kframe speedloader, you have to jiggle it just right, and let the extra round drop, though it is probablyl easier for most to just drop the rounds into your hand and manually load the old old fashioned way.