Mine's a Zastava barrel and action (mini Mauser) with a 20 inch barrel. I tossed the Zastava stock and replaced it with a American Black Walnut one. The rifle is there to shoot wild dogs and foxes, and so far the good load is a 40gn Nosler Varmageddon CCI BR Primers, Winchester brass and 21.8gn 4198. I've Chronoed the load and it's getting out at about 3,450fps. In Australian foxes are not native animals and have to be shot on sight.