Seriously... I just stumbled into a deal on a rifle that I liked and I've always had a thing against the .243 Win (270 also... and I freely admit my "thing" is not connected to any rational line of thinking, just "because") so it appealed to me.
The fact that it shot lights out only confirmed my initial attraction. Add to that the facts that it has less case capacity than the Win but, from my limited experience, it does extraordinarily well velocity-wise while maintaining a rather substantially decreased amount of blast & heat, and you've got a winner.
I guess that is the long way of saying I got no answer for ya. I certainly wouldn't advocate it being offered as a commercial cartridge, but for the use the OP appears to be seeking, particularly if he is into these rather obscure cartridges (like the BR), it would make sense.
When my throat gets toasted I'll likely have another rifle built for this cartridge and make great use of my 26" long sako tube by rechambering to 6-06!
