One thing I can say about the 6.5creedmoor, it has brought more new shooters into the precision rifle game in the last 13 years than any other cartridge. I know there are alot of cooler calibers out there but the 6.5creedmoor is the first specifically marketed as the beginners long range rifle. Also before we knock the science of the 6.5cm consider what it was marketed against: the 308. I know that you can do anything with a "custom" barrel on the 308, 260, 243, 22-250, 7mm08..... But YOU put a custom barrel on it. At that point you could have had one of the Sherman cartridges or a 65-284 or a 7saum. But that's not the point. You can buy any 65cm from a 279 axis to a hells canyon long range and you get something that is very easy to reload for because the specs are that far between different manufacturers.