Had a ton of 223R brass laying around...
Bought the last Hornady 6mm/223R (6x45mm) dies Midway had in stock and 200 75gr. V-Max. I'm gonna play with this round and see where it takes me, should be fun. Not sure which platform to go with, but the 223 brass converts very easily to 6x45mm with a single pull, well lubed or course.
It's AR compatible, lots of choices out there...everything I've read about sounds like great performance, low recoil, great accuracy out to 500 meters.
Next from GNR is a 257 Raptor carbine barrel/3x10 scope combo, still have 100 new Hornady 204Ruger brass begging for a ride.