I have a couple of unknown cartridges here, that appear to use the same projectile. I am loath to pull them to be sure. Just curious if anyone can identify them in any way. I believe they are French - they look very Velo-Dogish - similar to the .22 Velo-Dog Auto but bullets are different diameters and these are round nose (also cases are much longer/larger).
The auto cartridge is a standard 7.65mm Browning case (SFM headstamp) and the rimmed case looks like a new type to me (and is not headstamped).
I am inclined to think they are somehow related, as maybe in different timelines of an experimental caliber/weapon development project but that’s simply a guess. Both bullets are 0.226" / 5.75mm
Auto: OAL: 0.992" / 25.3mm, Case: 0.680" / 17.3mm
Rimmed: OAL: 0.982" / 25.0mm, Case: 0.695" / 17.65mm
Anyone have a glimmer?