b' Sub-XGEORGE GARDNERSub-X (SubsoniceXpanding) bullets deliver big results without a big bang! Designed to provide deep penetration below the speed of sound, Sub-X features a lead core. Long serrations in the gilding metal jacket combine with the patented Flex Tip insert within the bullets hollowpoint cavity to help it expand reliably at low velocities. Cannelures provide positive case crimp, making Sub-X ideal for semiautomatic weapons.EXPANDS AT SUBSONIC VELOCITIESPatented Flex Tip technology aids in expansion at velocities as low as 274 m/s.POSITIVE CASE CRIMPLead core bullet with cannelured jacket provides positive case crimp for use in semiautomatics.FUNCTIONS EFFECTIVELY IN A WIDE RANGE OF GUNSDesigned to fit, feed and function in a variety of firearms, including gas system guns.300 BLACKOUT 190 GR. (12,3 G) BARE GELATINVelocity: 320 m/s|Total Penetration: 44,5 cmCALIBER/30 Cal. TYPE Sub-XDiameter .308"Weight 12,3 g/190 gr.G1 Ballistic Coef. .437Sec. Den. .286Item # 30730Box Count 10030 CAL. 190 GR. (12,3 G)60 Bullets hornady.com'