Lancaster;

The old 28-30 and 39 triggers used to be had here for a few dollars. I should have bought a hundred of them...

They make improving the letoff very easy, tho it can be done with a normal factory M-N trigger with some difficulty. But it can be done. Are the 39 triggers available there in Finland as spare parts?

Please keep this project alive here on NE.

Also, as I understand it, the front of the magazine must be opened up a little to allow smooth feeding of the 9,3 round?

I think u are right about the use of similar boring for Makarov and "9x54R/9x53R". Why? Who knows, but maybe barrel drilling equipment was available for such. The Russians have made some work with 9,3 caliber military loads for sniper purposes also, but I think the more modern 9,3x64 loadings were common .366.

Anyway, some enterprising American should resurrect the 9,3x53R here. We are AWASH with millions {probably} of worn out M-N's!