Klaus,
The NOE , plain base 8 mm 190 RF at .325 shot well out of my Scout Rifle.
See below :
The 326331 long heavy round nose in plain base also shot very well.
The 326331 didn't shoot quite as
good as the 323471 G/C bullet
( It is tops in my Scout Rifle ) .
Both of the plain base 8 mm cast bullets that you see above are certainly worth trying.
The fast powders with the 8 mm plain base , like Bullseye, Red Dot, Amer. Select, International and Unique would be where I'd start.
Not certain if any of those powders are available to you ? ?
Ben