Burger Bullets is owned by the company that makes J4 jackets, so the jackets used on the bullets touted for hunting may be drawn differently. Burger's are a cup/core bullet just like Speer, Sierra, Hornady, Corelock's, etc, and the cup/core's have worked on deer just fine for a century now. Burgers are extremly accurate but only a $1 or$2 per 100 over std. bullets