Small caliber bolt history in a Uberti 1873 rifle.
Years ago Uberti made a very good bolt that was held together with a small pin. They redesigned the bolt so the extension was held in by a wedge shaped keeper and the bolt was still a very good bolt that lasted for years and years of cowboy action. Then something changed, people speculate they changed the steel or manufacturer and the lower tab started breaking. At first for a year or so Uberti had this problem and continued making the same bolt. Then about the W4XXXX serial number they made a modification. The tab was beefed up to rese