Hornady’s Varmint Express series delivers the accuracy and performance that all Hornady ammunition is known for. This ammunition is topped with Hornady’s NTX Bullets Instead of a lead core, the NTX bullets utilize a non-traditional copper-alloy core, encased in a thin, concentric copper jacket. The NTX is topped with a hard polymer tip – upon impact, the tip is forced back into the bullet’s nose cavity causing extremely rapid expansion as well as violent fragmentation. Features: Polymer tip and streamlined design for ultra flat trajectories. Match grade AMP bullet jackets provides maximum accuracy at all ranges. California compatible, lead-free. Hornady Rimfire Varmint Express .17 HMR 15.5gr Ammunition w/NTX Bullets (50/Box) 83171