Swedish 20x110 unified cartridge


#1

I just have learned that Sweden obviously had different cartridges for different weapons all chambered in 20x110 HS. I was aware of different lengths of projectiles but did not know that Swedish 20x110 variants were not interchangeable.
In the beginning 1960s a “unified” cartridge was considered.

Anybody to tell what the different cartrdges were and what the finally “unified” cartridge was?


#2

Unified usually refers to the Unified thread used,so maybe they had threaded primers?


#3

No thread here, it is about cartridge lengths and likely about gas pressures etc.
Hence my question.