Winchester Ballistic Silvertip 270WSM 150grWinchester Ballistic Silvertip 270WSM 150gr Ballistic Silvertip ammunition provides immediate knockdown and extreme precision. Deeper Penetration Alloyed lead core and thick copper base retain weight while driving through the vitals of big game Controlled Expansion Upon impact, the contoured jacket peels back while holding together the lead core and maximizing knock down energy Long Range Accuracy Boattail bullet with high ballistic coefficient