The Barnes Triple-Shock X-Bullets in .35 caliber (0.358" diameter) are revolutionary hunting bullets made from 100% copper and engineered for maximum performance. These 225-grain flat base bullets are designed to expand upon impact producing four razor-sharp petals with exceptional cutting capability.Barnes Triple-Shock X-Bullets 50 bullets per box.35 caliber (0.358" diameter) 225-grain weight100% copper construction for consistent performanceFlat base design for accurate shootingExpands to create four razor-sharp cutting petalsRetains 100% of original weight for deep penetrationOptimal seating depth: 0.03 to 0.07 inches off the landsIdeal for hunters seeking reliable one-shot kills on big game these bullets penetrate dense bone and tissue while maintaining their full weight for maximum stopping power and ethical hunting performance.