if you had mmp 24 there smaler or some harvester Black crush rib sabots or Harvester smooth black short sabots that would put you right on for size for .451 & .452 bullets and I do not swab with BH209
http://www.harvestermuzzleloading.co...mart&Itemid=18
http://www.harvestermuzzleloading.co...emart&Itemid=3