I read on Noslers site that they have just released a 30 cal E-Tip with a .503 BC. The ballistics look really good in my 06 if I can get similar velocities to what I get with the 168 grain ballistic tips. It maintains minimum recommend impact velocities to over 800 yards at my elk hunting altitude of 9,500+feet. The form factor on this is better than any of the other nosler bullets in 30 caliber and the high weight retention should make this a great elk bullet. I cannot wait to try them out.