I sent a note to Steven also, but haven't heard back yet.

I haven't done a chamber cast yet because the 6.5x52R cartridge fits nicely in the chamber and seems at least to be correct. I know it's not unusual to modify brass but have never heard of having to turn down the rim on a rimmed cartridge to make it work in a rifle chambered for the cartridge. And if the rim is too thick rather than too large in diameter, I don't know how you would fix that. Surely this thing must have been made to feed commercially available ammo. I can't imagine someone buying factory ammo back in the 1930s and having to play with it to make it work in the rifle.

The rifle has crown over BU proofs and the barrel date is '37. It has bases for claw mounts, but no rings. Double set triggers.

If you have any info on Zi-Di would love to have access to it.

many thanks for your input.

McKinney

PS - do you think a chamber cast would show differences in the rim diameter or thickness? I haven't worked with rimmed cartridges in bolt action rifles before, but really like the feel of this one and would love to shoot it.