For best performance buckshot should be used in a smooth bore barrel with our Modified or Improved Cylinder Rem Chokes. The fully rifled barrel will deform the shot and will not perform satisfactorily. For replacement barrels or choke tubes, please visit our online store at www.shopremingtoncountry.com. Remington offers a variety of buckshot loads. To find the best load for your application, please view our current offerings through the following link here.