Hey guys, a couple of questions about the 6x47L for you all, from what I have read, the caliber requires brass to be formed off of 6.5x47 brass, is this a hard thing to do? I have never formed brass so I have nothing to base and experience on, second, will this cartridge feed reliably?

Looking to push 70 grain Blitzkings to the 3700ish mark, this caliber seems capable of doing that. Any thoughts?