A guy is selling a rifle he got in auction but doesn't know anything about it. Pic of barrel shows 375 J & M. Any ideas fellas?
I think you're going to have to chamber cast that one. Once you determine the correct chamber dimensions you could probably rechamber to something usable.
The chamber cast could show that "it is" very useable! memtb
Possibly, but it's a wildcat of some version and who knows what brass would be required and I'm sure dies would have to be custom made. Loading data would be a challenge.
That barrel appears to taper very quickly for a heavy magnum.
I couldn't find any internet reference for 375 J&M or 375 L&M.
It looks like it is SOLD - https://www.gunbroker.com/item/1023587080A guy is selling a rifle he got in auction but doesn't know anything about it. Pic of barrel shows 375 J & M. Any ideas fellas? View attachment 522118
It looks like it is SOLD - https://www.gunbroker.com/item/1023587080