Wanting to build a 6arc, looking at bartlin or krieger barrels from a couple makers but im hesitant since they are expensive for how new the cartridge is. Wouldnt mind if there was a couple more major ammo companies like federal winchester or remington and a major mag like a pmag or lancer for the 6 arc/6.5grendal before i spend that kind of money on a barrel. Anyone know anything about if its growing in popularity or if its dying? Really like the concept and want to handload for it but dont want to be stuck handloading only in 5 years. Thanks. Also, whats you favorite barrel length for the 6arc?