Perhaps a special custom barrel in a drilling?

Are there any European continental 9.5mm/.375 rimmed cartridges?

We have the .375 H&H Flanged. The .375 Nitro Express (2 1/2"). I'm never can remember what exactly to call these two cartridges? The correct terminology. Were these two always British? Or Brit adaptations of earlier Euro rimmed cartridges? Eg similiar to the .404 and .500 Jeffery's.

Apologies to Continentals for distinguishing between "Europeans" and "British".

It's an old Empire.Commonwealth mindset thing. Friends from the continent living in the UK when we lived there got a bit strident at such terminology.

Back to cartridges.

Wasn't the 9.5x57 also called the 9,5 Nitro Express?

other than the two rimmed .375s mentioned were there any others Continental based .375 rimmed cartridges? Perhaps someone wanted a rimmed cartridge based on a shorter more modern 57mm case? Went to the trouble of special orders? It's pretty normal European practice, a rimless and acrimmed version.