The metallurgy that went into the Carcano design was quite sophisticated: one hardness for the bolt lockup area, another for the rest of the receiver. The rifling was gain twist, and the 6.5x52mm cartridge case actually had an internal "step" onto which the projectile was seated. Given a rifle in good condition and ammunition not produced under wartime conditions the Carcanos could hold their own in the accuracy department. While in Canada some years back I examined a competition variation of the '91 long rifle that had double-set triggers.I remember in WW1 the Ross 1910 a straight pull if it was put back together wrong the lugs wouldn't lock up and it could fly back into a persons face . Forgotten Weapons did a video on it . I haven't heard about the Carcano doing that , not saying it couldn't .