Hmmm...
Let's see:
The 6.8 SPC is the 6.8x43 in metric terms.
Necked up to .308, it is the .30 Remington, maybe improved a bit. That seems redundant.
Down to .257, it's the .25 Remington, again, maybe improved a bit. Again, a bit redundant.
At 6.5, it's 6.5x43. Almost exactly like the 6.5 TC/U (which is the .223 Remington - 5.56x45 - necked up to .264); which wouldn't make much sense to duplicate.
At 7mm, it's 7x43, and again, there's the 7 TC/U. <yawn>
At .243, it's the 6x43 (which would be the equivalent and redudant to, the 6x222 and the 6mm TC/U).
So, why bother with wildcatting a cartridge to get exactly the same thing you get with pre-existing cartridges, with reamers, ballistics, and known variables already out there?
Wait... I'm sorry, I was thinking logically again... I have to stop doing that...
