None I've heard of has done it. I'm shooting a 6.5X6.8 a bit and it is a better all around case for me. In the same way a 22 Nosler vs a 22X6.8 the shorter case gives more flexibility and it runs at a higher pressure to make up the difference plus some.
If you do one let us know how it goes.
The best firearm for self defense? Any loaded one will do.