Like the Barnes Triple-Shock X Bullets, the Tipped TSX bullets are made of 100% copper and contain no lead. They deliver the same “three strikes you’re out” rule. Once as it strikes game, two as the bullet begins to open and a third impact when the cavity fully expands to deliver extra shock with maximum transferred energy. The added polymer tip creates a faster expansion rate as well as better long range ballistics. Tipped TSX bullets are ideal on medium-sized game like deer, pronghorn and sheep.