Barnes® Spit Fire TMZ Bullets - 290 Grain - .50 CaliberThe Barnes TMZ muzzleloader bullets feature 100% copper core construction and TMZs patented polymer tip. Barnes sabots offer exceptional accuracy and shocking power, combined with deep, reliable penetration. These Spitfire sabots retain virtually 100% of their original weight and have a higher ballistic coefficient, enabling exceptionally long range performance. The streamlined tip increases expansion for faster loading and superior accuracy.