The Pedersoli™ Missouri River Hawken Rifle is a 50 caliber percussion model that is a reproduction of the plains style rifle manufactured from 1840 to 1865. The Pedersoli™ Missouri River Hawken features the classic lines and incredible performance of the .50 caliber Missouri Rifle. The Missouri River version features a precision-rifled, rust brown finished 30" octagonal barrel with six-groove rifling and a tight 1:24" twist rate to deliver superior downrange precision with sabot and conical bullets alike.