The Spanish doubles from the 60s and 70s got a bad reputation for soft steels on internal parts. But it was very hit or miss as to which ones were good and which ones were soft as butter. Many Spanish guns were fine, but they all got tainted with a bad reputation.
Had a friend buy a 20 POS that he reworked into a double rifle. He was a great home shop gunsmith. Smoothed and hardened the internals, bushed the firing pins, sleeved the barrels with two .444 barrels from Marlin. First two shots were 1/2 apart at 50 yards. At 100 they were 1/2 apart but had switched sides. Since he was using it for a wild hog stopper it was a perfect setup. Lords knows how many hogs he killed with it. Hes gone now and nobody knows where that double rifle ended up.
