Anyone shooting one of these rounds?

No direct experience, but this should be very similar to Ruger and Hornady's 6.5 Creedmoor.

Creedmoor

Creedmoor Drawing

why ding around with either wildcat when you can load a 260 Remington?

all either one is, is a smaller 260 Rem., which you can download a little and accomplish the same MV...neither would be worth the effort and expense

If you must have a smaller case, the 6.5x47 Lapua would be interchangeable and is designed to work with the lighter 6.5mm bullets.

I made up one of these [6.5-250] many years ago in Hawaii. Actuall the old 6mm International necked to 6.5. Nice target round with the 100 gr bullets for small stuff. Later, in Oregon, I was in JGS one day and met Jim Carnichael who was trying to get Cuthbert to adopt two cartridge designs he said he "invented" , one being the 263 Express [Ken Waters] and the 6.5/250. As we all know now the 263 Express became the 260 Rem. Too bad Mr. Waters didn`t get the credit he deserved!
Aloha, Mark