Hummingbird it is Fred...here's a pic of red box & yellow box.
And yeah, my son's youth Henry levergun 16" bbl shoots the yellow box okay too, but the Sportster and Adult size Henry get stuck about half the time... just ain't worth the hassle. The yellow box rounds make virtually NO noise at all in a rifle, and unless I see the bullet hit the dirt (or the can) I really don't know if it exited the barrel without looking down the bore!
And note, it even has French for any non-bilingual Francophone Canucks who desire same. (Also on the back, Spanish - they ARE made in Mexico)
I gave some to a friend of mine in BC when I was up there in the spring. He had never seen them before (and he works in a gun store) so I wonder how common they may be for you in SK..?
Cheers
Kerry