Re: Barrel length???
The barrels are from the same manufacture and the same caliber. The same person probably cuts all the chambers. They all said the barrels shot good, some didn't care for the chamber finish. I would go with the 24", but before you do, maybe do some more research on who makes them. Try "savageshooters.com", maybe some better ideas over there. Maybe post in equipment decisions or gunsmithing?