I've used Speer's spitzer boat tail for almost 30years. The BC on my 165gr is .520 that's outstanding especially since they've been that way since moses was a baby. LOL They have never failed in any aspect for hunting that I'm aware of. They were about as close to a match bullet as you could get for decades and proven in the field. They fly true, hit hard at long ranges, and retain plenty of weight. I would be heart broken if Speer ever discontinued that bullet.