Thanks jmoore. That's what makes my rifle unique IMHO. It has FAT42 on the barrel and a 1947 FTR date.

Back in the day, when I bought it, Carcanos were thought of as junk by most. This one was in perfecte condition and had a gain twist barrel. I didn't know that by 1941, they weren't making gain twist barrels any more. That's whats so interesting about milsurps. There are so many possibilities. Seeing as the rifle was rebuilt in 1947, it was probably done with existing spares. That is the only reason I can think of that a rifle would have an early barrel as a replacement.

To tell the truth, I was under the impression that only the little carbines had gain twist barrels.