I have all the parts for a new rifle build and will be getting it done asap. I was going to have it chambered in 6XC, but am wondering if I should go with the 6mm creedmoor so I can use Lapua 6.5 creedmoor brass. What are the real advantages to the small rifle primer and is it worth buying another set of dies? I haven't had any problem with 6XC norma brass. Just wondering if the small primer is better and why.