Nice! Below is a Carcano I built in 7.62x39. Check out this link for an
article written by Horady's Chief ballistics scientist on the Carcano.
Attachment 182701
From the above mentioned article:
"The materials used in the Carcano are excellent. These rifles were made from special steels perfected by the Czechs, for which the Italians paid royalties. If you have ever tried doing any work on a Carcano receiver you will find out just how hard and tough the steel is. The Carcano has also received a reputation as being a “weak” design. Nothing could be further from the truth. The Italians made a small run of Carcanos early in WW II chambered for 8 X 57 JS. The Germans rechambered some Carcanos to 8 X 57 JS late in WW II. These rifles were also proofed for this cartridge. The CIP minimum suggested proof pressure for the 8 x 57 JS cartridge is 73,500 psi. I hardly call this a weak action.
The best case I can make for the strength of the Carcano was a personal experience attempting to blow one up for a hunter safety course video. I was asked by the Department of Game and Fish of New Mexico about 12 years ago to help them with this. At the time I was one of the ones ignorant about the Carcano, believing it to be a weak action and easy to take apart. Well, the morale to this story was a full case of Bullseye failed to do anything significant to the action or barrel. We finally had to fill a cartridge case with C4 explosive and detonate it to get anything that looked like what we wanted. One other incident I have experienced with the Carcano further convinces me of the great strength of these actions. In my early experiments with .268” bullets, and loading data for them, I had several incidents of extreme pressure. The bolt had to be opened with a hammer and the cartridge case appeared to be a belted magnum. The headspace of the gun had grown slightly but otherwise was fine and has been fired many times since. I know from my experience as a ballistician that pressures in excess of 90,000 psi are required to do this type of damage to a cartridge case. A good condition Carcano rifle is as safe and strong as any other military bolt-action rifle you will encounter."