The Barnes TSX 450 Bushmaster hunting bullets deliver proven performance with 275-grain flat base design and .451'' diameter for optimal accuracy and terminal performance.Barnes TSX 450 Bushmaster hunting bullets 20 per box275-grain flat base design with .451'' diameter100% lead-free all-copper constructionInstant expansion with perfect penetration99-100% weight retention for maximum effectivenessReduced barrel fouling and increased velocityExceptional accuracy for hunting applicationsIntroduced in 2003 the Barnes TSX has earned worldwide recognition as one of the most dependable hunting bullets available delivering cleaner quicker kills with outstanding accuracy and reduced environmental impact.