There was also pre-Anschluss ammo around for a while, seemed to have come in at the same time as the stuff with the chickens.
Previous to that, there was a whack of actual Bulgarian-made ammo in this calibre, made at Sofia Arsenal and headstamped BPhi with the date. I have a bag of it here, mostly 1940 - 1944 stuff.
CLIPS are something else and I have managed to scavenge several of the Nazi ones, a couple of pre-Anschluss Austrian, a couple I believe from the Honved and a single example with the old Imperial double-eagle. The Kaiser would approve, I am sure!
NICE part is that the same Clip also works in my 1917 Police Carbine, which is still in 8x50R.
Ammo is easy to make: for the 8x56 you can just open-out 7.62x54R and it's close enough, for the original round, just open out and trim. Works.