First, I'm NOT soliciting to sell this. That will come later on S&S once I get this and other tong tools ID'd.
Stamped: Ideal Mfg Co New Haven CT. 22 10 stamped where the caliber is normally shown.
Mold cavity is .199" ID ...darned close to 5mm dia. Priming chamber shows .256" case OD.
The cartridge sizing chamber measures 1.141" from face to an edge inside.
Obviously centerfire, although the decapping pin is missing, or never was. There is no knock out hole in the bottom of the sizing chamber for the pin.
I've come up empty trying to identify the cartridge, so I'll appreciate any help.
Thanks, Dave.