You need to look here:
https://www.canadiangunnutz.com/forum/showthread.php/1787958-Marstar-Swedish-8mm-surplus-ammo
and here:
https://www.canadiangunnutz.com/forum/showthread.php/1794011-8mm-Swedish-vs-8mm-Mauser
P.S. the Burn Rate of the powder is much faster than any of the 4350's, it's much closer to 4064.
If this ammo was originally loaded in Sweden, then my guess on the powder would be the original Norma N203 [not 203b] or Bofors RP-3,
which is very close to IMR 4064, but slightly denser and finer grained. Dave.
That's a plausible explanation, so long as those powders originate during or before WWII when the ammo was manufacturer. All the powder I've seen is "flake", but another CGN member has reported pulling an extruded powder from 8X63 ammo.
http://castboolits.gunloads.com/showthread.php?354603-Bofors-RP3-surplus-powder
I've wondered myself, but never really followed up. I have a contact in Sweden I'll ask.
If this ammo was originally loaded in Sweden, then my guess on the powder would be the original Norma N203 [not 203b] or Bofors RP-3,
which is very close to IMR 4064, but slightly denser and finer grained. Dave.



The ex-forum sponsor tried to charge me $125.50 for shipping for this ammo and tried to hide the shipping cost from me.
The website checkout said shipping would be calculated and I would have a chance to see shipping cost in the next step before approving the sale, but that step never came. They began to process the sale but couldn't because they didn't have my license on file. They contacted me by email to get the license # and still hadn't advised shipping cost. It took several emails back and forth for me to learn what the cost was. Disappointing business tactics and the last time I will bother with them.



























