Practice & Defend HST/Syntech Combo Ammunition Packs pair the self-defense load proven by law enforcement with the industry's most complete training ammunition for a combination like no other. Federal Practice & Defend Packs include 50 HST Personal Defense loads and 50 Syntech Training Match rounds. All produce identical velocities, trajectories and point of impact for the most realistic training and utmost protection. Practice loads feature reloadable brass casing and Defense loads are in reloadable, Nickel plated brass. FeaturesBallistically paired Syntech Training Match and HST loadsPractice loads' Total Synthetic Jacket prevents metal fouling, reduces barrel heat and friction, and minimizes splash-back against hard targetsHST expands reliably through a variety of barriers and penetrates to ideal depths for self-defense situationsFlawless function and reliability in semi-automatic pistols