.348 Winchester Wildcat?


#1

Hi everyone
I recently purchased a cartridge that I am unable to identify. It is a .348 Winchester casing formed into a rimless .360 caliber cartridge. The bullet is exactly .360" and has a copper or brass cap at the tip. It was found in a collection that was accumulated in the 1960s and 1970s. Any ideas on this cartridge would be great. Thanks
Rim diameter= .545"
Rim thickness= .040"
Base diameter= .545"
Shoulder diameter= .478"
Neck diameter= .386"
Case length= 2.240"


#2

Roy Gradel had several wildcats based on the .348 Win. case. Some were rimless and some were a rimmed versions of the same cartridge. I have only seen the 7mm and .30 Gradel Express magnums. This doesn’t look like one of his as the Gradel rounds had radius shoulders like a Weatherby cartridge.


#3

Thanks for the lead, Sportclay!
The head of the 7mm rimless Gradle Express has a very similar appearance to this cartridge. You are right that the shoulder doesn’t quite match.


#4

Hadn’t thought of the Gradle because of the radically different shoulder but here is what is labeled as a .30 Warren Campbell. However I think that must be the name of the guy who gave it to a previous owner. it is a Gradle waiting to be fire formed in a Gradle chamber.
Headstamp and primer same as yours. case length is 2.259" Bullet is .308"
DSCN3963


#5

Thanks, Pete,
That cartridge does indeed seem very similar. The only difference is the caliber and .360" seems like a more obscure caliber in terms of wildcatting. My cartridge may be a product of Roy Gradle, as the time periods certainly match to my knowledge. I can’t imagine there were more than a few wildcatters in the 1950s and 1960s lathing the rim off of a .348 Winchester.