25 Grendel or 25 BR

[Brakeman]

As you and I have talked about In the past LRRP52, the 30 Rem AR would be the ultimate upper/cartridge to wildcat with.

I was on a kick to make a 6.5 or 6mm wildcat with my 30 Rem AR. But I couldn't even get my hands on a single magazine or bolt, so I gave up quickly. I had a really nice CS rep from DPMS even searching thier old warehouses and came up with nothing... the 30 RAR has almost the same capacity as a 6.5x47L.

Speaking of such, what's that wildcat the grouchy guy at ARP makes with the 270? I'm not sure what he is doing regarding the bolt/barrel extension but I believe he is necking the 6.5x47L up to 270 and running it in a small frame AR.. I'm not savvy on the details and I know it's not very popular, but in regards to what you want to do with a quarter bore would that be applicable?

I've ponder similarly Kilco, but rather than using the scarce Remington 30AR brass with its weirdo base size, why not go to 450 Bushmaster brass from Hornady and/or StarLine? That way you'd have a more standardized .473" base size making the AR BCG bolt head an easy no drama component. Would think starting out with a straight wall case would provide more options as well. The 30RAR uses a sloping 25º shoulder, could a 30º be more advantageous?

All of which to say there are a pethora of options out there conceptually, would be interesting to explore the best path forward in the AR15 platform. Would love to see this type of development in the oft overlooked 25 caliber configuration.