The gentleman who traded with me for the a couple of cutaways sent me these two 7.62x39. He picked them up at a show and was never really sure what they are.
The blue tipped one is on a Wolf laquer steel case, the yellow tipped is on a S. African brass case 91/14 (JackWells has noted that this should be a ball round, and quite possible loaded in US). Any clue to who made these? Maybe Noerthern Arizona Munitions/ haak48?
Got a lot of good info on the 357 multiball, thanks all. wolfgang