I have a Winchester 1892 in 25-20 WCF. It's a takedown with octogon barrel. I cast bullets for it from antique molds, use blackpowder, and assemble the loads with an antique loading tool. It's a great short range small game gun.
And if you think 25-20 WCF is expensive, try 25-20 Single Shot. They run almost $2.50 apiece.