I always thought that 26" OAL was the minimum
There is no 'minimum' in the law for rimfires and non semi auto centerfires. (although if you get short enough eventually they'll call it a pistol)
What it does say is you cannot MODIFY a firearm to be below certain lengths (the rules are a little different for semi auto centerfire, non semi auto centerfire, and rimfire). The law also says you can't go below a certain length by action of telescoping, folding or other similar action.
So - you can't have a gun with a folding or collapsing stock that, when folded or collapsed, is less than about 26 inches. You also cannot cut your gun down to be below those minimums (and there's seperate minimums for cutting barrels)
However - if a non semi auto comes from the factory below 26 inches, its' technically all good. The rossi is 24, the chiappa 23. If it were a semi it would be restricted, but it's not.
Neither folds or telescopes, so both are clear on that point.
Because it's a traditional rifle action, the police classify it as a 'rifle' not a pistol. Plus - you do need two hands to use it in a practical way.
Therefore it's a non-restricted, as it should be.